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Needle Roller Bearings · DIN 5429

Machined Brass Cage NUKR Series Stud Type Track Rollers

Temperature and speed limits, lubricant compatibility, and the bore range this cage is offered across.

Machined Brass Cage NUKR Series Stud Type Track Rollers are made from machined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker). Corrosion behavior: good in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant. The material is non-magnetic, and the usable service range is the cage itself is good well past the temperature at which the lubricant and the ring stabilization give out. In practice this material is specified for large bearings, high speed, heavy shock and vibration, and wherever temperature or lubricant rules out polyamide.

Material
machined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker)
Corrosion resistance
Good in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant
Magnetic response
Non-magnetic
Service temperature
the cage itself is good well past the temperature at which the lubricant and the ring stabilization give out

Property figures are typical for the material. In an assembled bearing the lubricant, the seals and the cage frequently reach their limits before the material does, so check all four against the duty. Material certification is available on request for production orders.

Gearbox bearing — NUKR Series Stud Type Track Rollers in service

In a nukr series stud type track rollers, Machined Brass Cage is the cage, which spaces the rolling elements and keeps them from touching each other. The grade is machined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker); it is non-magnetic, and its usable service range is the cage itself is good well past the temperature at which the lubricant and the ring stabilization give out. This page covers what the material changes about the bearing, the limits it brings with it, and the sizes supplied.

Why Machined Brass Cage for NUKR Series Stud Type Track Rollers

Specified for large bearings, high speed, heavy shock and vibration, and wherever temperature or lubricant rules out polyamide. In a nukr series stud type track rollers it is the cage, which spaces the rolling elements and keeps them from touching each other.

A machined brass cage is strong, stable at temperature, and unaffected by the oils and additives that age a polymer cage. It is what large bearings, high-speed bearings and heavily shocked bearings are supplied with.

Material Properties

Grade designationmachined cast or wrought brass, rolling-element or ring guided (suffix M, MA, MB or MP by maker)
Magnetic responseNon-magnetic
Service temperatureThe cage itself is good well past the temperature at which the lubricant and the ring stabilization give out
Corrosion characteristicGood in most industrial environments; brass is attacked by ammonia, so it is not used in ammonia refrigeration plant

Service Limits

Brass is attacked by ammonia, so a brass-caged bearing has no place in an ammonia refrigeration plant. The machined cage also weighs more than a pressed or moulded one, which matters for acceleration and for the cage forces at very high speed.

Alternatives and When to Switch

Polyamide is lighter, quieter and cheaper for ordinary speeds and temperatures; pressed steel is the volume standard. Brass earns its cost where the cage forces or the temperature are genuinely beyond both.

Sizes of NUKR Series Stud Type Track Rollers Available in Machined Brass Cage

DesignationRoller outer diameter D (mm)Roller width C (mm)
NUKR353518
NUKR404018
NUKR474724
NUKR525224
NUKR626229
NUKR727229
NUKR808035
NUKR858535
NUKR909035

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the designation snaps the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.
Our facility

Where these dimensions are actually made

Ring forging, heat treatment, raceway grinding and superfinishing all happen under one roof, so a bore tolerance and a clearance group are set by processes we control and can evidence, not by whichever supplier had stock.

Bearing production line, wide view
Ring inspection station
Bearing assembly and clearance setting
Finished bearings staged for packing

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Specification
Business Information

Dimensions & Specifications (DIN 5429)

DesignationRoller outer diameter D (mm)Roller width C (mm)
NUKR353518
NUKR404018
NUKR474724
NUKR525224
NUKR626229
NUKR727229
NUKR808035
NUKR858535
NUKR909035

Video: Machined Brass Cage NUKR Series Stud Type Track Rollers

Third-party video, selected automatically for this topic. It is not produced by Bushing Bearings and is not a specification source — use the tables on this page for dimensional data.

Frequently Asked Questions

What should I use instead of Machined Brass Cage?

Polyamide is lighter, quieter and cheaper for ordinary speeds and temperatures; pressed steel is the volume standard. Brass earns its cost where the cage forces or the temperature are genuinely beyond both.

Does Machined Brass Cage change the dimensions or the rating?

The cage carries no load, so it changes no rating. What it changes is the operating envelope: the maximum temperature, the maximum speed, the tolerance of shock and vibration, the noise, and the compatibility with the lubricant. A bearing is very often limited by its cage long before its rings are in any danger, which is why the cage suffix in a designation is not a detail.

Does the cage affect the load rating?

No. The cage carries no load — it spaces the rolling elements and guides them. What it decides is the operating envelope: the temperature limit, the speed limit, the tolerance of shock and vibration, the noise, and the compatibility with the lubricant.

How do I know which cage a bearing has?

From the suffix in the designation. The conventions differ between makers, but a bearing without a cage suffix normally has the standard pressed steel cage, and the polyamide and machined brass alternatives are always marked. Where the cage matters to the duty, state it on the order rather than assuming.

How do I request a quotation?

Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.