NEEDLE ROLLERS AND SHAFTS, AVAILABLE IN VARIOUS SIZES AND MATERIALS TO SUIT DIVERSE APPLICATIONS
Bowman offers a comprehensive range of needle rollers and shafts, supplying precision-engineered components for demanding industrial and automotive applications. Manufactured from premium 52100 chrome steel needle roller material as well as stainless steel grades including 316, 304, and 400C, these components deliver exceptional hardness, wear resistance, and dimensional accuracy for long service life in high-performance assemblies.
Designed for applications where space is limited but load capacity cannot be compromised, needle rollers provide an efficient rolling element solution with a high load-to-size ratio. Their compact design enables engineers to reduce bearing envelope dimensions while maintaining excellent radial load capacity, making them ideal for precision machinery, transmissions, gearboxes, pumps, electric motors, and motion control equipment. Precision shafts complement these rollers by providing hardened, accurately ground running surfaces that ensure smooth operation and consistent performance.
As a trusted precision needle roller supplier, Bowman offers an extensive selection of standard sizes and materials to suit a broad range of operating environments. Components manufactured from 52100 high carbon chrome steel provide outstanding fatigue strength and wear resistance for general engineering applications, while stainless steel needle rollers offer enhanced corrosion resistance for food processing, medical, marine, and chemical processing environments. Our product range also includes precision shafts manufactured to tight tolerances, supporting reliable operation in high-speed and high-load applications.
Bowman’s needle rollers and shafts are widely used in automotive needle roller assemblies, transmissions, cam followers, industrial gearboxes, agricultural equipment, hydraulic systems, and precision mechanical equipment. Whether you require a cam follower needle roller, a reliable precision shaft manufacturer in the USA, a small diameter roller distributor, or high-quality rolling elements for OEM production, Bowman delivers precision components backed by decades of engineering expertise, consistent quality, and dependable technical support.
Needle Rollers, Rollers and Precision Shaft Data
| 1mm | 2.8mm 3.8mm 4.8mm 5.8mm 6.8mm |
| 1.5mm | 4.8mm 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8 mm 11.8 mm 12.8 mm 13.8 mm 14.8 mm |
| 1.7mm | 10.8 mm 11.8 mm 12.8 mm 13.8 mm 14.8 mm |
| 2mm | 4.8mm 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8 mm 11.8 mm 12.8 mm 13.8 mm 14.8 mm |
| 2.5mm | 4.8mm 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8mm 11.8mm 12.8mm 13.8mm 14.8mm 15.8mm 16.8mm 17.8mm 18.8mm 19.8mm 20.8mm 21.8mm 22.8mm 23.8mm 24.8mm |
| 3mm | 4.8mm 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8mm 11.8mm 12.8mm 13.8mm 14.8mm 15.8mm 16.8mm 17.8mm 18.8mm 19.8mm 20.8mm 21.8mm 22.8mm 23.8mm 24.8mm |
| 3.5mm | 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8mm 11.8mm 12.8mm 13.8mm 14.8mm 15.8mm 16.8mm 17.8mm 18.8mm 19.8mm 20.8mm 21.8mm 22.8mm 23.8mm 24.8mm 25.8mm |
| 4mm | 4.8mm 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8mm 11.8mm 12.8mm 13.8mm 14.8mm 15.8mm 16.8mm 17.8mm 18.8mm 19.8mm 20.8mm 21.8mm 22.8mm 23.8mm 24.8mm 26.8mm 27.8mm 28.8mm 29.8mm |
| 4.5mm | 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8mm 11.8mm 12.8mm 13.8mm 14.8mm 15.8mm 16.8mm 17.8mm 18.8mm 19.8mm 20.8mm 21.8mm 22.8mm 23.8mm 24.8mm 26.8mm 27.8mm 28.8mm 29.8mm |
| 5mm | 5.8mm 6.8mm 7.8mm 8.8mm 9.8mm 10.8mm 11.8mm 12.8mm 13.8mm 14.8mm 15.8mm 16.8mm 17.8mm 18.8mm 19.8mm 20.8mm 21.8mm 22.8mm 23.8mm 24.8mm 26.8mm 27.8mm 28.8mm 29.8mm |
| 5.5mm | 7mm 13.8mm 17mm 18.8mm 26.8mm 33.8mm 35.8mm |
| 5.7mm | 16.6mm |
| 6mm | 6mm 8mm 9mm 10mm 11mm 12mm 13mm 16mm 17.8mm 19.8mm 21mm 23.8mm 25.8mm 26.2mm 29.8mm |
| 6.04mm | 9.4mm |
| 6.193mm | 23.75mm |
| 6.32mm | 12.7mm |
| 6.33mm | 25.14 |
| 6.35mm | 6.35mm 7.2mm 10.7mm 20.8mm |
| 6.5mm | 6.5mm 7mm 9mm 10mm 18mm 20.8mm 27.8mm 31.8mm 33.8mm 37.8mm 39.8mm |
| 6.9mm | 11.3mm |
| 7mm | 7mm 8mm 9mm 10mm 11mm 14mm 16mm 18mm 20mm 29.8mm 35.8mm 37.8mm 38mm |
| 7.071mm | 30mm 40mm |
| 7.5mm | 7.5mm 8mm 9mm 10.5mm 12mm 15.5mm 20mm 29.8mm 34.8mm 39.8mm |
| 7.92mm | 14.4mm 14.5mm |
| 7.938mm | 25mm |
| 7.99mm | 13mm |
| 8mm | 8mm 9mm 12mm 13mm 16.5mm 17.3mm 22mm 40mm |
| 8.035mm | 15mm |
| 8.5mm | 21mm 21.75mm |
| 8.74mm | 17.3mm |
| 8.8mm | 12.7mm |
| 9mm | 10mm 14mm 24.5mm 34.8mm |
| 9.23mm | 13.5mm |
| 9.5mm | 16.2mm |
| 9.75mm | 13.4mm |
| 9.85mm | 11.5mm |
| 9.86mm | 20mm |
| 9.525mm | 13.6mm |
| 10mm | 10mm 11mm 12mm 14mm 15mm 16mm 17mm 18mm 20mm 30mm 41.8mm 47.8mm 49.8mm 59.8mm |
| 10.2mm | 9.5mm |
| 11mm | 11mm 12mm 15mm 18mm |
| 10.312mm | 50mm |
| 12mm | 12mm 13mm 14mm 16mm 21mm 22mm 25mm 28mm |
| 12.7mm | 14mm 47mm |
| 13mm | 15mm |
| 13.39mm | 25mm |
| 14mm | 15mm 16mm 20mm 22mm |
| 14.3mm | 31mm |
| 15mm | 15mm 16mm 22mm 24mm 39mm |
| 16mm | 17mm 24mm 27mm 55mm |
| 18mm | 19mm 32mm |
| 18.82mm | 22mm |
| 19mm | 20mm 28mm |
The Key Strengths of the Needle Rollers & Shafts
Bowman's needle rollers and shafts are manufactured to deliver exceptional precision, durability, and performance across a wide range of industrial applications. Produced from premium 52100 chrome steel needle roller material as well as 316, 304, and 400C stainless steels, these components provide excellent wear resistance, high load capacity, and reliable operation in demanding environments. As a trusted precision needle roller supplier, Bowman offers an extensive selection of standard sizes and material options to suit everything from compact mechanical assemblies to heavy-duty industrial equipment. Whether used in automotive needle roller systems, cam follower needle roller applications, gearboxes, pumps, or precision machinery, these components are engineered to maintain dimensional accuracy, minimize friction, and maximize service life. Combined with precision-manufactured shafts, they provide dependable performance for OEMs and maintenance professionals alike.
Precision Engineering
Manufactured with fine tolerances to ensure smooth motion and optimal performance.
Versatile Material Options
Available in various materials to suit diverse applications and environments.
Wide Size Range
Offered in multiple dimensions to meet varying load and design requirements.
Heat-Treated for Durability
Enhanced through heat treatment for improved strength and wear resistance.
Extensive Usage Potential
Suitable for automotive, industrial, and precision machinery applications.
Dimensional Accuracy
Designed with exact measurements to ensure perfect alignment and fit.
Frequently Asked Questions
What are needle rollers used for?
Needle rollers are cylindrical rolling elements used in bearing assemblies to support high radial loads while occupying minimal space. Their high load-to-size ratio makes them ideal for compact mechanical designs used in automotive transmissions, cam follower needle roller systems, gearboxes, pumps, electric motors, agricultural equipment, and precision industrial machinery.
What materials are Bowman needle rollers available in?
Bowman's needle rollers and shafts are manufactured from premium 52100 chrome steel needle roller material for excellent hardness and wear resistance. Stainless steel options, including 316, 304, and 400C grades, are also available for applications requiring enhanced corrosion resistance, making them suitable for marine, food processing, medical, and chemical processing environments.
What sizes of needle rollers and shafts does Bowman stock?
Bowman offers a comprehensive range of standard needle rollers and shafts in various diameters and lengths to suit a wide variety of bearing and precision engineering applications. Our extensive product range enables customers to select components that meet both standard OEM and replacement requirements.
Can Bowman supply custom needle roller sizes?
Yes. As a trusted precision needle roller supplier, Bowman can supply custom needle rollers and precision shafts to meet specific dimensional and application requirements. Our engineering team can assist with selecting the appropriate size, material, and specification for OEM, prototype, or specialist engineering projects.
What is the difference between a needle roller and a precision shaft?
A needle roller is the cylindrical rolling element that carries the load within a bearing assembly, while a precision shaft provides the hardened, accurately ground running surface on which the needle rollers operate. Together, they create a compact, high-performance bearing system capable of supporting heavy loads with low friction and excellent operating accuracy.
Looking for a custom size or special specifications?
Whether you need standard or custom options, we’re here to help. Reach out now and let’s find the perfect match!
