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The Brands of Dayton Lamina

Dayton ProgressDanly-IEMLaminaLempco

Supporting Manufacturing for Over a Century

Dayton Lamina is a MISUMI Group Company featuring these manufacturers and brands based in the USA, with additional operations and support throughout the world.

Dayton Progress

Dayton Progress has been consistently delivering quality, competitively-priced punches, die buttons, retainers, and other tooling products to metal fabricators since 1946. Dayton Progress operates multiple manufacturing and engineering facilities in North America, Europe, and the Pacific Rim. Dayton Progress offers exceptional value for its customers with more quality, more products, and more technical support. Manufacturing facilities are ISO 9001 certified.


Lamina is a leading international manufacturer of tool, die, and mold components for the metal working and plastic forming industries. Since 1938, Lamina empowers customers to compete globally by providing innovative and value added products and services. Our expertise and experience in manufacturing die components ensure stringent quality standards and controls for our customers. Lamina products are manufactured in state-of-the-art ISO 9001 and ISO 14001 certified facilities in Michigan and Wisconsin.

Danly IEM

Danly IEM is the trusted name for solutions and innovation for the global parts forming industry since the 1920s. Danly IEM is the leading manufacturer of die making supplies and components for industry in North America. The Danly IEM product line includes a wide range of guide posts, bushings, die springs, wear plates, cams, and other diemakers' supplies. Danly IEM also manufactures special components and customized products to fit our customers' specifications. Danly products are manufactured in state-of-the-art ISO 9001 and ISO 14001 certified facilities in Michigan and Wisconsin.


Lempco is known for extremely high quality and reliability since 1917. Lempco's die set guiding components and die springs provide you with the highest precision level available to the metal stamping industry. Lempco has proven experience in selecting metals, developing designs, and understanding the details of customer needs to ensure you receive cost-effective performance run after run. Lempco products are manufactured in state-of-the-art ISO 9001 and ISO 14001 certified facilities in Michigan and Wisconsin.


Anchor Lamina America Terms and Conditions of Purchase


These are the Terms and Conditions of Purchase for Anchor Lamina America, Inc. and the vendors from which it purchases products or services.


Terms and Conditions of Sale

Dayton ProgressDanly-IEMLaminaLempco

These are the Terms and Conditions of Sale for Dayton Lamina Corporation (Seller) and the Purchaser (Buyer) of its products.


DL Part Selector - Easy Selection of Pins & Bushings


Pins and bushings calculator, much better than the old MDL part selector

The Dayton Lamina Die Calculator (aka DL Part Selector) provides quick and easy selection of pins, bushings and cages. Calculate your die's engagement height. Instantly access product information for genuine Danly, Lamina, and Lempco brand die components.

Instantly download CAD data for each product.

This free part selector tool is available to all registered users.




The MDL Part Selector does not offer CAD data. Only Dayton Lamina does! The MDL Part Selector does not offer genuine Danly, Lamina, or Lempco products. Only Dayton Lamina does!

Dayton Lamina is not affiliated in any way with MDL Mold & Die Components, Inc. or the MDL Part Selector.

The MDL Part Selector does not offer CAD data. Only Dayton Lamina does! The MDL Part Selector does not offer genuine Danly, Lamina, or Lempco products. Only Dayton Lamina does!

Choosing the Proper Die Springs

Dayton ProgressDanly-IEMLaminaLempco


Extend operating life with well-chosen Dayton Lamina die springs

Die springs, an essential stamping die component, create the optimal pressure for restraining the sheet material in a fixed position while it is being pierced, formed, flanged, or trimmed. The springs also provide controlled return pressure for the die stripper to permit the punches and other die-mounted tools to evacuate the material during the press' return stroke.

Die springs are most commonly used to actuate strippers, but they can also be found behind form pressure pads and binder rings in draw dies. The goal is to provide adequate die spring pressure within the limited remaining space of the die.

Spring Selection Process

Figure 1

To select a die spring, you first should gather information about three different aspects of the die design: how much pressure is needed; what spring size and how many are needed to produce that pressure; and how far these springs must collapse or travel.

Pressure Requirements

To determine spring pressure for a spring used in a stripper, first calculate the perforating pressure for the entire die. To do this, you need to know the thickness and shear strength of the part material as well as the length of shear or cutting distance. These elements multiplied together will give you the perforating pressure. The formula reads:

Perforating pressure = S × T × L


  • S = Shear strength of the part material
  • T = Part material thickness
  • L = Total length of shear or cutting distance


A pressure equal to 10 to 15% of the total perforating pressure typically is used to actuate the stripper (the range accommodates the potential differences among spring manufacturers). This allows for the downward ram speed to align safely and engage the die shoe components into their guided, mated components before material contact.

Spring Stripper

Figure 2

As the ram moves down, the stripper makes contact with the part material and stops. The spring continues to compress, or travel, until the ram reaches the bottom of its stroke.

Stripping pressure = Perforating pressure × 0.10 to 0.15

Although the formula for determining pad pressure in a form die is different from that of a stripper, it must still contain the same three elements of (1) pressure, (2) quantity and size of springs, and (3) the travel. The pad pressure in a forming operation should be at least 1.5 times greater than the force required for bending the part.

Bending pressure = ((S × 0.166 × T2) / (T + R1/2 + R2/2)) × L


  • S = Tensile strength
  • T = Material thickness
  • R1 = Radius on form punch
  • R2 = Radius on form die
  • L = Length of form


Pad pressure = Bending pressure × 1.5

A forming operation requires more pad pressure than a bending operation because of the need to control sheet material movement over the forms and maintain its new shape. The pad pressure also helps to prevent material from scoring or tearing as it is being formed.

Pressure requirements for binder rings in draw dies tend to be less scientific, determined by trial and error. It is not uncommon to find a note on a draw die design stating the spring requirement as "springs to suit."

As the binder ring holds the material in its locating position, the spring pressure required tends to be adjusted to eliminate the tearing and shearing that may occur while the material is being drawn or stretched. A too-high spring pressure will inhibit the drawing of the material, while too little pressure will draw material up the form and fail to provide a uniform wall thickness.

Spring Size and Quantity

The amount of available space in the die will help determine how many springs to use and what sizes to choose. Whenever possible, try using numerous low-pressure springs rather than a few high-pressure springs. This will reduce stress on the springs.

As long as the tool layout permits the necessary space, more springs of lower pressure allow for more evenly distributed pressure and a more balanced stripper pad. This enhances sheet material control throughout the complete press stroke. Also, if just one die spring becomes fatigued, the die pad will continue to operate with the other springs.

Die spring placement, when applicable, should be nearest the area being pierced, formed, flanged, or trimmed. This enhances the ability to locate the most pressure on the area being worked upon while maintaining sheet material control. The use of spring cams, retainer bolts, or spring pockets serve to guard the springs from debris and protect the tool die details in the event of a fatigued or broken die spring.

Travel Requirements

When springs are installed in a die, they are compressed approximately 0.125 inch. Called preload, this compression is necessary to keep the springs from working their way out of the die. As a side benefit, the preload reduces the shock associated with rapid loading and unloading of the die and increases the spring life.

Figure 3

The bottom of the stripper draws up just short of being flush with the end of the punch. This ensures that the part material strips completely off the end of the punch. When the press cycle starts, the ram begins to move downward. The stripper makes contact with the part material and stops. As the ram continues descending, the springs compress, allowing the punches to extend through the part material and into the die button until the ram reaches the bottom of its stroke. This compression is called stripper travel.

The travel of a spring is determined by the spring preload, thickness of the material, entry of the punch into the die button, and the distance the stripper hangs below the bottom of the punch. Put simply, preload plus the stripper travel equals the total spring travel.

The same is true in form and draw dies. Pressure pads or binder rings will also travel and compress the springs. Preload plus travel of the stripper or comparable component will give you the total travel of the spring.

To reduce stress and allow for maximum spring life, you should keep preload and travel to a minimum. The more rapidly a spring works in compressing and decompressing, the greater the fatigue factor. Slower-spring applications permit longer spring travels, longer spring life, and the ability to operate near maximum spring deflection levels. The faster a die spring cycles, the shorter the spring life expectancy. In such fast cycling applications, you should lower the spring deflection.

Spring Selection

Now that you know the pressure, approximate size, and travel, you can begin the actual spring selection process. This starts by combining the three aspects of the die design. First, divide the total stripping force required by the number of springs to be used.

The selected spring must deliver the desired pressure at preload. To determine the pressure of the spring at a given preload, multiply the amount of preload by the amount of pressure the spring develops over one inch. Most spring catalogs give pressure ratings over one inch as well as various other amounts of compression or travel.

Keep in mind that the spring must offer sufficient travel within its normal operating range. For example, the maximum operating range of a medium-pressure spring is approximately 50% of the free, or static, length. The efficient operating range of this spring is between 10 and 35% of the free length. Higher-pressure springs will have a shorter range of travel.

Although springs will compress beyond the maximum operating range, you should avoid this at all cost. Compressing beyond maximum range will severely hinder spring life and could damage the die. It is also a good idea to choose a spring with extra travel to prevent over-traveling the spring after a tool has been re-sharpened.

Tough Under Pressure

Whatever your application might be, you can be sure that die springs from Dayton Lamina provide rugged, dependable performance. The brands of Dayton, Lamina, Danly-IEM, and Lempco offer a wide selection of NAAMS, ISO, and JIS standard springs.

Addressing the Issues of Conflict Minerals - Anchor Lamina


What are “Conflict Minerals”?

Conflict minerals are defined as tantalum, tin, tungsten and gold originating in the Democratic Republic of the Congo or adjoining countries (DRC).  There is concern that armed groups are using the proceeds from the sale of conflict minerals to fund conflicts and worsen the emergency humanitarian crisis in that region.  To address these issues, the United States enacted a rule under the Dodd-Frank Act which requires publicly held companies to disclose their use of conflict minerals and ensure responsibility in their mineral supply chain.

Conflict Minerals Position Statement

Anchor Lamina manufactures and distributes punches, die components, die details, and related metalstamping/forming tools. Anchor Lamina supports the Act’s goal of ending violence, human rights violations, and environmental devastation in the specified countries. We are committed to supporting our customers’ activity to comply with the conflict minerals rule and other requirements under the Act.  Thus, to assist our valued customers that may be engaged in due diligence regarding compliance with the Act, we are sharing this Conflict Minerals Position Statement.

Expectations for Suppliers

In support of Anchor Lamina’s position on conflict minerals, suppliers are expected to supply materials to Anchor Lamina that are "DRC Conflict-Free". Anchor Lamina’s suppliers are expected to support industry requirements to heighten traceability efforts and are expected to exercise responsible practices in conflict mineral supply chains. Anchor Lamina’s suppliers are expected to understand the source of any conflict minerals used in our products, source responsibly, and not knowingly provide Anchor Lamina with any products containing conflict minerals.  Please be advised that the most recent version of the Conflict Minerals Reporting Template (CMRT) can be found, along with training materials, at

It has been, and always will be, Anchor Lamina’s goal to be a good corporate citizen and support our valued customers to the best of our ability. We continuously update and enhance our compliance efforts and will continue to share relevant information to our customers.  Should you have any questions or require further information, please contact your local Anchor Lamina Sales Representative or Compliance Specialist.

One Invoice, One Payment

Dayton ProgressDanly-IEMLaminaLempco

In February 2014, Dayton Progress Corporation and Anchor Lamina America announced their merger as Dayton Lamina. Dayton Lamina's full line of tooling includes everything in your bill of materials: punches, die buttons, pins & bushings, wear & guide components, die springs, cams, die details, punch retainers and more.

Effective January 5, 2015, all packing lists and invoices are issued by Dayton Lamina Corporation. A notice on both documents states:

Please note that effective 1/5/2015, Dayton Progress and Anchor Lamina combined to become Dayton Lamina Corporation. Orders previously placed with these two individual companies could be included in this invoice/packing list.


What We Need To Do

To ensure a smooth transition, we need your help with a few changes. Please take a moment to do the following, if you purchase from us directly:

  1. Update your records with our payment information
  2. Download our new W-9 form (US customers only)
  3. Supply your tax exempt form with Dayton Lamina as the supplier (US customers only)

Thank you for your cooperation in this matter.


1 – New Payment Information

Payments should be made to Dayton Lamina Corporation with new remit-to addresses.

Please note that a delay in the receipt and processing of your payments may occur if the four digit zip code extension is not used and/or if the remittance address is not printed in black or blue ink.

For standard delivery, please remit to:

Dayton Lamina Corporation
Dept. 771830
P.O. Box 77000
Detroit, MI 48277-1830

For overnight delivery, please remit to:

Dayton Lamina Corporation
JPMorgan Chase
ATTN: Dayton Lamina Corp.
Dept. 771830
9000 Haggerty Road
Belleville, MI 48111-1632

For Wire or ACH transfers:

Dayton Lamina Corporation
c/o Chase Bank
40 North Main Street
Dayton, OH 45402

Wire Routing #021000021
ACH Routing #044000037
Check ABA Routing #044000037
Swift Code #CHASUS33
Account #601962306

If you are transferring funds to our bank, please email a list of invoices being paid to DAYTON LAMINA at or send via fax (937) 847-5737 to the attention of Tanya Rice so that we may properly credit your account.


2 – Taxpayer Identification Number and Certification (W-9)

Download our W-9 Form for US customers.

Dayton Lamina's new Tax ID Number (FEIN - Federal Employer Identification Number) is 26-2353103


3 – Tax Exemption

If you are a US customer, please provide a current executed Tax Exempt Certificate, Direct Pay Permit or Resale Certificate for your organization stating a statutory reason for the exemption for Dayton Lamina Corporation to honor the same. If we ship to multiple states on your behalf please provide a multi-jurisdictional certificate as applicable.

This information can be emailed to or faxed/mailed to:

Dayton Lamina Corporation
ATTN: Gayla Powell
500 Progress Road
Dayton, OH 45449

FAX: 937-847-5793


Other Important Documents



We're here to help. Reach us online, by mail, by phone, or by fax.

Dayton Lamina Corporation
500 Progress Rd.
P.O. Box 39
Dayton, OH 45449-0039 USA
Phone: (937) 859-5111
Fax: (937) 859-5353

Special Products


Special Products custom manufactured to your specifications

Lamina has made special components for as long as it has manufactured a standard product line. For over 50 years, Lamina specials have been made with precision and delivered with consistent quality.

Special Die Springs and Heavy Duty Compression Springs

Special die springs and compression springs can be manufactured to your specifications. Our special compression springs can be manufactured to your choice of material, size, tolerances, and coatings. We can manufacture to military specifications. We will provide special inspections, certifications, and testing as required.

See our Heavy Duty Compression Springs flyer for more details.

Special Wear and Guide Components

Our ball-bearing retainers and flat wear and guide components can also be supplied as specials. See our Specials Capabilities flyer for more details.

If one of Anchor Lamina's standard components is not suited to your application, we can manufacture a special to meet your exact needs. Our standard components can be modified to suit or we can create a new part to your exact requirements.

Specials can be manufactured outside the diameter and length size range normally found on our standard products. Our special components can include any standard product feature. Additional options can include surface finish, coatings, special materials and welding processes.

We offer a two-week turnaround on made-to-order special pins and bushings. Please give us an opportunity to quote to your requirements.

Bronze Plating Services


Lamina has been bronze plating precision die and mold components for over 50 years. Because of their standard high quality, Lamina Bronze plated components have long been known for their excellent wearability. Anchor Lamina has recently expanded its services to include bronze plating.

Today, Lamina's bronze plating facility in Bellaire, Michigan is one of the largest dedicated bronze plating facilities in North America.

Bronze Plating Facilities

Lamina's modern bronze plating facility uses automated rack plating. Our bronze plating operation provides a complete metal finishing service. We offer process services for chemical cleaning, aqueous washing, degreasing, and regular sand blasting.

Lamina specializes in the bronze plating of wear surfaces on low and high carbon steel. Our bronze plating line can accommodate single part weights up to 400 lbs. (180 kg) and a part size envelope of 36" x 36" x 96 " (900 x 900 x 2400 mm). Our bronze plating (80% copper 15% tin, 5% trace elements) process can attain a controlled plating thickness in the range of 0.001 to 0.025 inch (0.025 to 0.64 mm). Bronze plating hardness of 70 Rb can be achieved.

Lamina's Bronze Plating operations provides complete process control, quality, testing and chemistry for our in-house metal finishing and electroplating. Complete automotive, aerospace, military and commercial testing and approvals are available.

Bronze Plating Experience

Lamina has specific commercial bronze plating experience with the following part types and finishes.

  • Wear surface or sliding surface specialty
  • Protection against adhesive wear
  • Bronze plating on low and high carbon steel (ANSI 1018, 1026, 4140, 141, A36HR, 1117, etc.)
  • Bronze plating of hardened or soft steel
  • Bronze (80% Cu, 15% Sn, 5% trace elements)
  • Plating of bushing and bearing internal diameters from 5/8 inch (15.8mm) ID
  • Unfinished plating thickness 0.001 to 0.025 inch (0.025 to 0.64 mm)
  • Coefficient of friction 0.2518 on finished bronze plated surfaces
  • ID oil grooves and grease holes

Lamina Bronze Plating Benefits

Lamina bronze plated components meet or exceed industry requirements for bronze plating. Our team of industrial bronze plating specialists can provide know-how in the complete finishing process. Support is available for pre-treatment, cleaning, surface preparation and finishing. For new parts requiring bronze plating, our assistance is available.

Bronze Plating at a Glance

  • Wear surfaces
  • Protection against adhesive wear
  • Commercial Bronze (80% copper, 15% tin, 5% trace elements)
  • Bushing and bearing internal diameters
  • Rack plating
  • Automated line and small quantity specials
  • Part weight up to 400 lbs. (180 kg)
  • Part size envelope to 36" x 36" x 96" (900mm x 900mm x 2400 mm)
  • Bronze on low and high carbon steel
  • Yellow bronze (Cu-Sn)
  • Electroplating
  • Non decorative, industrial plating
  • Bronze wear surfaces on steel
  • Masking and select masking
  • Engineered metal finishing
  • Hardness of up to 70 Rb available
  • Unfinished thickness 0.001 inch to 0.025 inch (0.025mm to 0.64 mm)
  • Bronze Plating Process control
  • Improved wear resistance to extend useful component life
  • Impart special properties such as lubricity enhancement, non-stick surfaces, etc
  • Protection against adhesive wear
  • Flash Bronze Plating 0.0001 inch thick (0.0025 mm thick)



Manufacturer of Die Components, Die Springs and Die Accessories

Quality, precision, and dependability are the requirements of today's production processes, from ultra-high speed stamping technology to computer manufacture.

Lempco manufactures die set guiding components and die springs to provide you with advantages in precision and performance that are available nowhere else.

LEMPCO is meeting the needs of customers by matching improvements in design, materials and manufactures with the highest precision level available to the industry!

Company Profile

Lempco is an internationally recognized manufacturer of guidance systems for the metal stamping industry. Long recognized as the standard for excellence in the industry, and known for their extremely high quality and reliability, Lempco's die components are in demand worldwide.

Lempco Industries began as Lake Erie Metal Products Company in 1917 when Mr. James F. Strnad started a small machine shop to work on government projects during World War I. Following the war, the company found an ever growing demand for automobile replacement axles. From this beginning, the product line expanded to include a wide variety of Industrial products distributed throughout the United States and foreign countries.

During World War II, Lempco developed the “Hypermatic Press”. It was used to manufacture defense products and ran at a high speed, capable of producing 7,200 pieces per minute or 3,456,000 pieces per eight hour shift.

The incomparable speed of the Hypermatic Press required a die set design which no one before envisioned. Lempco introduced its patented ball bearing die set in 1945. From this time forward, the stamping industry would never be the same.

The innovative ball bearing guidance system offers both stampers and die makers the following advantages over the common plain bearing system:

  • Registers the die more accurately providing precision parts, longer die life and less maintenance.
  • Ease of assembly or disassembly of the punch holder and die holder providing higher precision dies and reduced die building time.
  • Longer stamping runs (millions of strokes) providing less maintenance down time.
  • Minimizes replacement of guidance components.

In 1963, Lempco introduced the unique “Lempcoloy” plain bearing lubrication free bushing. It has qualities far above those of steel, bronze, or bronze plated bushings:

  • High tensile strength with glass-hard wear-resistance.
  • Extremely low coefficient of friction.
  • No lubrication required (This product is used widely by the food processing industry).
  • Dielectric (Facilitates EDM machining).
  • Excellent thermal conductivity.
  • Corrosion resistant.

Lempcoloy® self-lubricating bushings, standard and short shoulder, are available in 10 sizes starting with 1/2" inside diameter thru 3".

In 1987, continuing with its pioneering and innovative philosophy, Lempco introduced the Rotainer®, a multi-directional action guidance system to rotate as well as move vertically on the post. The Rotainer® possesses increased resistance to normal wear, is unaffected by high speed operation and offers precise die registration.

Lempco has proven experience in selecting metals, developing designs, and understanding the details of customer needs to ensure you receive cost-effective performance run after run. Lempco knows what it takes to keep you competitive today, and will continue to strive to keep you competitive into the next millennium.

Lempco's Improved Capabilities

  • Guide posts and bushings and all types of die springs are now manufactured in ISO 9001:2015 certified facilities
  • Special compression springs, die springs, and components
  • Expansive distribution network worldwide



Die Springs


Die Springs Product Features

  • Same day shipments – we stock them so you don't have to
  • Inch sizes manufactured to industry standard colors
  • Reliable, trouble-free performance
  • Manufactured in an ISO 9001:2015 certified facility
  • Manufactured from spring-quality Chromium Silicon alloy, high-tensile strength steel in accordance with ASTMA A1000-99 specifications
  • Optimal rectangular wire design

Custom Springs

A custom spring is any spring that has:

  • Unique physical attributes
    • Special wire material, plating or paint
    • Custom free lengths, diameters, solid heights, rates, number of coils or custom loads at a given deflection
  • Critical tolerances
  • Specific inspection or certification requirements
    • Military specifications
    • 100% inspection of critical characteristics
  • Statistical reports
  • Computer controlled multi-point tests

Specials Capabilities

  • Finished outside diameters from 58" to 10"; lengths from 5" ID to 60"
  • Finished inside diameters
    • Hardened Steel — ½" ID to 4" length; from 358" ID to 14" length
    • Bronze Plated Steel — ½" ID to 4" length; from 4½" ID to 9" length
    • Solid Bronze (w/wo graphite plugs) — 5/8" ID to 4" length; from 618" ID to 778" length
  • Heat treating and hardening up to 62 HRC
  • Options can include surface finishing, coatings, special materials, and welding processes

Lempcoloy Plain Bearing Bushings


These unique hard coated aluminum bushings have the surface hardness of case hardened steel. An electrochemical process is used to increase the corrosion resistance of the bushings. As a result of this Hard Anodized process, they are also non-conductive, so they may be used for electrical discharge machining. They have a hard surface that is highly resistant to wear and not subject to magnetization. These bushings are for clean room and EDM applications and should not be used in any stamping operation wherein a lot of contaminants are generated.

Lempcoloy® bushings do not require lubrication and therefore are not provided with the conventional figure-eight oil grooves and fittings. While these bushings do not require lubrication, we recommend you apply a light mist of spindle oil prior to assembly and spray lightly prior to each press run.

Lempcoloy® bushings are designed to be installed by tap fitting to seat flush with the ground surface of the punch holder. They are assembled with toe clamps and screws. These bushings must not be pressed in or honed. These Lempcoloy® bushings will work well when used with Lamina plain bearing guide posts.

  • Unique bearing material with exceptional wear resistance
  • Hardness rating 60 - 70 on the Rockwell C Scale
  • Self lubricating thus useable in applications where lubrication would cause contamination
  • Non-corrosive, not subject to magnetization and also dielectric
  • Excellent heat resistance with very low thermal conductivity and expansion

Surface Mount Ball Bearing Assemblies


Lempco now offers Surface Mount Ball Bearing Assemblies, a new low cost alternative added to our die components guiding system product line. This component assembly is mounted directly to the die holder and punch holder rather than the conventional method. Complete assemblies will include the necessary mounting bolts and dowel pins required for installation. Optional tapped mounting holes are available to secure Stroke End Blocks.

Surface Mount Ball Bearing Assemblies are available as stand-alone assemblies or can be mounted to your machined-to-order die set by your die set builder.

Plain Bearing Guiding Systems: Inch and Metric


Lempco provides high-speed, precision ball bearing components. In order to support our Lempco Plain Bearing line of die sets, we offer Lamina style Plain Bearing posts and bushings.

  • Pins: straight, demountable, shoulder styles
  • Bushings: short shoulder, long shoulder, extra long shoulder, sleeve, press fit, bosses, tap fit, steel, bronze, bronze plated, precision styles.

Ball Bearing Guiding Systems: Inch and Metric


LEMPCO is a recognized leader in providing quality ball bearing components:

  1. Rotainer® designed ball cage that minimizes tracking.
  2. Precision Rotainer® and retainer that provides accuracy and repeatability in high speed applications.
  3. Quality pins and bushings are made from 52100 tool steel and are precision ground.

Pins: 52100 tool steel - straight, demountable, shoulder styles.

Bushings: 52100 tool steel - straight, demountable, shoulder styles.

Lempco Rotainer® - Precision Ball Retainers

ISO Certifications

Dayton ProgressDanly-IEMLaminaLempco

ISO Certificate ImageDayton Progress and Anchor Lamina are certified ISO 9001:2015. The ISO 9001:2015 certification exemplifies our continued commitment to enhance customer satisfaction through quality management practices and standards.

This certification by no means represents the end of the process, rather it strengthens our resolve to keep raising the bar on customer service. Achieving ISO 9001:2015 certification validates our continued commitment to global quality and complete customer satisfaction.




ISO Certificates

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