what's standard of needle rollers(chrome steel, stainless steel)? where's loose cylindrical rollers in stocks manufacturers? how to buy precision sizes bearing needle rollers pins only?
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YDTech® manufacturer of precision needle rollers sizes(NRA,NRB) and needle rollers stocks! supplier of standard cylindrical rollers or needle rollers stocks(G2,G3) in china.

we have over 20 years of manufacturing experience of precision rolelrs. we had most stock, delivery time: send to europe, USA, or canada only 3-5 work days

usually, the material of needle rollers(cylindrical rollers) is chrome steel 52100, then stainless steel: such as 302,304,316,306AL,420,420C,440C etc. then tungsten steel, the newest ceramic material is silicon nitride (si3n4), or zirconium oxide(ZrO2) etc.

Needle roller bearings are a type of rolling element bearing that uses long and thin cylindrical rollers instead of balls. These rollers have a high length-to-diameter ratio and can support radial loads, making them suitable for use in a variety of industrial applications. Needle roller bearings are typically used in applications where space is limited, and high load-carrying capacity is required. They are commonly used in automotive and aerospace applications, as well as in various types of machinery, such as gearboxes, engines, and pumps.

The design of a needle roller bearing typically consists of a thin outer ring, a series of cylindrical rollers, and an inner ring, which may or may not be separable from the outer ring. Needle roller bearings are often used in conjunction with thrust bearings to provide additional support for axial loads. They are available in a variety of configurations, including single-row, double-row, and full complement designs, and can be made from a range of materials, such as steel, brass, or plastic.

manufacturer and supplier of needle rollers

we are professional manufacture of bearing rollers and cylindrical needle rollers. we produce rollers of diameter 0.5 mm to 60 mm. the rollers could satisfy the request of DIN 5402 G2 rollers.

standard sizes of needle rollers and cylindrical rollers

loose needle rollers,cylindrical pins, needle rolling elements,
φ1x5.8φ1x6.8φ1x7.8φ1x9.8
φ1.5x5.8φ1.5x6.8φ1.5x7.8φ1.5x9.8φ1.5x11.8φ1.5x13.8
φ2x6.8φ2x7.8φ2x9.8φ2x11.8φ2x13.8φ2x15.8φ2x17.8φ2x19.8
φ2.5x7.8φ2.5x9.8φ2.5x11.8φ2.5x13.8φ2.5x15.8φ2.5x17.8φ2.5x19.8φ2.2x21.8
φ2.5x23.8
φ3x9.8φ3x11.8φ3x13.8φ3x15.8φ3x17.8φ3x19.8φ3x21.8φ3x23.8
φ3x25.8φ3x27.8φ3x29.8
φ3.5x11.8φ3.5x13.8φ3.5x15.8φ3.5x17.8φ3.5x19.8φ3.2x21.8φ3.5x23.8&phi 3.5x25.8
φ3.5x27.8φ3.5x29.8φ3.5x34.8
φ4x11.8φ4x13.8φ4x15.8φ4x17.8φ4x19.8φ4x21.8φ4x23.8φ4x25.8
φ4x27.8φ4x29.8φ4x34.8φ4x39.8
φ5x15.8φ5x17.8φ5x19.8φ5x21.8φ5x23.8φ5x25.8φ5x27.8φ5x29.8
φ5x34.8φ5x39.8φ5x49.8
φ6x17.8φ6x19.8φ6x21.8φ6x23.8φ6x25.8φ6x27.8φ6x29.8φ6x34.8
φ6x39.8φ6x49.8φ6x59.8
loose needle rollers,cylindrical rollers, needle rolling elements, bearing,precision needle rollers
needle rollers cylindrical rollers drive pins crowned rollers needle roller bearing copyright©2023 YDTech®