Roller Construction

A Börkey Roller is available in many variations as every Börkey Roller can be built to best match a specific application. Starting with a base roller construction, each component can be upgraded to improve durability, reliability and functionality. The highest possible quality may certainly be required when moving a nuclear reactor, but not every application calls for the most expensive roller configuration as each component upgrade increases the cost.

It is important to remember that the roller selection should always exceed the application requirements for safety and usability, however, consider selecting a cost-effective roller configuration that makes economic sense in relation to the application. Hence Börkey has created different levels of quality to suit different application requirements.

The graphic below provides a clear understanding of each quality aspect of a roller and will show which features – including component upgrades and construction methods – are included on which roller models.

Generic Competitors (Lower Quality)

Quality 1/10		Low cost cast iron one piece frame is brittle and less dependable.
2/10		A welded-in center plate has weaker joints prone to shearing and is far less dependable.
3/10		Their basic wheels are likely to crack and deform.

Börkey Rollers (Higher Quality)

Quality 4/10		Standard Duty Carbon steel interlocking frame construction with pass-through center plate.
5/10		Our hardened roller wheels have higher durability (against point-loading) and toughness.
6/10		Heavy Duty A hardened center plate provides easy rolling after long standstills under load.
7/10		A reinforced design provide additional frame strength against twisting.
8/10		Super Duty Our super duty roller wheels (50CrV4 steel) provide high safety capacity against point loading (rocking) and side forces (wind).
9/10		A channel chain guide keeps rollers on 360° track preventing roller chain damage.
10/10		Ultra Duty A center chain guide provides superior 360° chain guidance for frequent use.
		Access holes allow for repair of chain while under load. Available on request for selected models only.

For galvanization, stainless steel components and frame coatings, please see Weatherproofing Upgrade Options (available on selected models only)

Models by Construction Type

Standard Duty	Construction: Interlocking carbon steel frame construction plus hardened load wheels. For: Load loading and unloading Short distance rolling Intermittent use Corrosion Resistance: Zinc-phosphate frame coating & blackened wheels. Example Use: Machinery moving, material handling, crane erecting	Model KK Model KN Model KC
Heavy Duty	Construction: All above plus hardened center plate. For: Months of load bearing Ease of rolling after long standstill Short distance travel Intermittent rolling Corrosion Resistance: Zinc-phosphate frame coating, blackened & galvanized wheels, axles & links. Example Use: Scaffolding, General Construction, Machine Fabrication	Model KB Model KA
Super Duty	Construction: All above, plus hardened super duty load wheels & channel chain guide. For: Permanently loaded Ease of rolling after long standstill Long distance travel Intermittent rolling Corrosion Resistance: Zinc-phosphate frame coating & blackened wheels standard. Galvanization, stainless and offshore add-on options available. (See option packages) Example Use: Bridge construction, Offshore, Structure & equipment rolling	Model KS Model KZ
Ultra Duty	Construction: All above, but with center chain guide replacing channel guide. For: Permanently loaded Ease of rolling after long standstill Long distance travel Frequent rolling Corrosion Resistance: Zinc-phosphate frame coating & blackened wheels plus galvanized chain standard. Stainless and offshore add-on options available. See option packages. Example Use: Bunker doors, Gantry crane operation	Model KM