Needle Roller Bearings (ISO / DIN) are specified where the joint requires supporting a rotating shaft and carrying its radial and axial loads with low friction. The sections below cover the typical end-uses by industry, the size and material decisions for each, assembly practice, and the applications this fastener type is not suited to. Stocked across roughly 8 mm to 40 mm, they cover general to heavy-duty work.
Typical Applications for Needle Roller Bearing — ISO / DIN (Series 133)
The most common settings where these are specified:
- General machine building: fastening covers, brackets, motors and sub-assemblies on production equipment.
- Maintenance & repair (MRO): a stocked size for servicing existing plant where the original fastener spec must be matched.
- Fabrication & metalwork: bench and on-site assembly of steel frames, enclosures and weldments.
How to Specify Needle Roller Bearing — ISO / DIN (Series 133) for Your Application
- Size: Select on bore diameter, and confirm it against the mating feature in the assembly. This product spans 8 mm–40 mm; check the full table below for the exact dimensions of each size.
- Material: Choose the material and finish for the service environment — plated steel for general use, stainless for corrosion resistance.
- Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- Standard: This product is supplied to ISO / DIN. Quoting the standard on your order guarantees interchangeable dimensions between suppliers.
Where Needle Roller Bearing — ISO / DIN (Series 133) Are Not the Right Choice
Match the fastener to the load, environment and whether the joint must be reopened; the wrong class or style is the usual cause of joint failure.
