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Boerkey - Machine Roller - Convertible - Kit - w Handles and Case - Set Capacity 60 tons

Model KK#2
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Set Capacity
60 tons
Height w Top
4.6 inches
4 rollers, 4 swivel tops, 4 handles and 1 case

Quick Info

  • Four (4) machine rollers, Four (4) swivel tops, Four (4) handles, and one (1) case. Color: Blue
  • Machinery moving & material handling 
  • On-off loading 
  • Short distance travel 
  • Non-mounted and versatile 
  • Low-profile or turnable with swivel tops
  • Solid interlocking carbon steel frame construction 
  • Hardened steel load wheels 
Corrosion Resistance: 
  • Wheels blackened & zinc-phosphate coated frame for corrosion resistance. 
Manufacturer: Börkey ("Boerkey"), Made in Germany

Applications: For machinery installation & maintenance, material handling.


Original Inventor and Manufacturer of Machine Rollers
                              Börkey Since 1945
Toolwell: Exclusive North American distributor for Boerkey 
  • US-based Sales 
  • Stocked and Shipped from the US
  • Engineering & Lifetime Technical Support


Capacity (Tons)
Capacity Each Roller (Tons)
Length (In)
Max Speed At Full Load (Ft/Min)
Kit N #2 (US)
Roller Height With Top (In)
Roller Height Without Top (In)
Set Capacity (Tons)
Total Number of Wheels
Weight (Lbs) - Product weight
Weight (Lbs) - Shipping weight
Wheel Diameter (In)
Wheels under stress
Width (In)

Börkey Color Coding

Identifying Colors:

Blue: Standard Machine Rollers (standard on this US model).

Maroon: Machine Rollers with Hardened Center Plate for months+ of load holding, on models KB, KA, KS, KZ and KM only.

Product In Use

Customer supplied - Pictures
Intro to Boerkey



Product Guides & Documents

Printable Details Printable Details
Engineering Drawings (inch) Engineering Drawings (inch)
Engineering Drawings (mm) Engineering Drawings (mm)
Certification Certification
MSDS Lubricant MSDS Lubricant
MSDS Standard Frame Coating MSDS Standard Frame Coating
Which Roller?
Roller Construction
Rolling Resistance
Weather Resistance
"Roller" vs. "Skate"
Selecting Roller Capacity
Defining Capacity
About Börkey


Machine Roller Information

Model Series:

  • U.S. Model Series: KK
  • Manufacturer Part Number (MPN): Kit N
  • Manufacturer product name: Roller Skate - The Solids


  • Ideal for machinery installation and maintenance, and material handling applications when rollers are loaded and off-loaded frequently and when loads are rolled over short distances


  • Use as straight-line, low profile rollers where low height is required. Low height also minimizes required lifting to place loads onto machine rollers
  • Use with optional swivel tops and turning handles for turnability
  • Non-mounted: Rollers can be moved from job to job
  • Rollers are versatile and multi-purpose

Swivel top styles:

  • All model sizes #1-3 are outfitted with anti-slip padded tops


  • Four rollers
  • Four swivel tops
  • Four turning handles
  • One metal case

Quality Level Classification

  • Standard Duty Roller (Levels: Standard | Heavy | Super | Ultra)


  • Solid carbon steel construction with interlocking frame design
  • Hardened steel load wheels

Corrosion Resistance:

  • Blackened load wheels plus zinc-phosphate coated frame for basic corrosion resistance


  • Used as toolset by machinery movers.
  • For moving moderately heavy machines, parts of machines for installation, repair, and maintenance
  • For transporting equipment and other loads on steel plates & tracks, or smooth concrete or asphalt
  • For material handling


  • Manufactured by Börkey
  • Made in Germany

Other specs:

  • Maximum safe speed: 16 feet per minute
  • Rolling resistance
    • 4-7 % of load weight

Other Important Information:

  • Individual machine roller capacities (and Set Capacities) are calculated based on moving the load across a steel surface (all wheels are touching the floor and the load weight is equally divided across the roller footprint). When using 4 (or more) machine rollers, load may rock on uneven surface, increasing load weight applied to any roller. Therefore, select suitable rated machine roller capacity carefully.
  • Börkey Machine Rollers are made to run on a solid strong surface such as steel. Operating the rollers across concrete floors - especially repeatedly along the same path - may damage the floor.
  • Individual machine roller capacities and rolling resistance are calculated based on moving the load across a steel surface.
  • The track or floor surface is vital for the safe transportation of the load, not just the carrying capacity of the Machine Roller. Movement on tarmac and concrete is restricted, and the machine rollers should never be used on uncovered tile. For best results on tile, concrete, or tarmac we recommend putting a steel plate of a minimum of 0.4-inch thickness underneath.
  • Machine Rollers with larger diameter wheels will roll more easily than those with smaller wheels. Problems such as high rolling resistance on certain surface types such as concrete, or resulting floor scratching, can be avoided by choosing roller models with a larger load wheel diameter. Consequently, if moving across concrete floors, size #3 rollers (1.2 inch/30mm wheel diameter) or larger should be used.
  • Precautionary measures must be taken for use on inclines to avoid run-away loads!
  • When using swivel tops on 2 rollers, also use tops (swivel tops or rigid tops) to keep the load at same loading height.

How Does This Machine Roller Differ From Other Börkey Models?

Every Börkey machine roller starts with a “Made-in-Germany” - interlocking solid frame design, however, each component can be upgraded to improve certain performance characteristics allowing a perfect configuration for any application.

The standard Börkey machine roller features the Solid frame construction with hardened steel load wheels. These Machine Rollers are specifically made for installation of machines & material handling where the machine rollers are only loaded for a short time and roll short distances. (Models KK, KN and KC).

Hardening the center plate additionally significantly improves the ease of rolling after long standstill under load. These Robust Rollers are made for loads that sit longer on the dollies, roll a short distance but must roll after an extended period of inactivity such as during construction. (Models KB and KA.)

Further upgrading to the Super Robust construction provides superior strength and stability against torsion and fatigue over time under extreme loads and extreme rolling forces. Using load wheels manufactured from hardened 50CrV4 steel creates a higher safety capacity against point loading (rocking) and side forces (wind). The addition of a “channel”-type chain guide to the center plate keeps the load wheels in a track preventing wheels from scraping against the walls and prevents chain damage. These Machine Rollers are specifically made for permanent load carrying, where loads sit on these rollers for many years, must roll a long distance, and must be safe even when subjected to rocking or side forces. (Models KS and KZ.)

By adding a groove into the middle of each wheel and outfitting the center plate with a “center”-type chain guide to run inside the wheel groove wear on the wheels is completely eliminated. This allows the machine rollers to be used frequently. (Model KM)

All machine roller models have “blackened” wheels plus a zinc-phosphate coated frame to provide a durable basic level of corrosion resistance. Galvanization of wheels, axles and links improves the corrosion resistance significantly. (Models KB, KA, KS, KZ and KM). Additional options such as galvanization of frame, stainless steel components and marine & offshore coatings are available. (Models KS, KZ and KM).

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