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Needle Roller Bearing

Needle roller bearings are roller bearings with cylindrical rollers. Relative to their diameter, the rollers are thin and long. This type of roller is called a needle roller. Despite its small cross-section, the bearing still has a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers (roller diameter D≤5mm, L/D≥2.5, L is the roller length), so the radial structure is compact. When its inner diameter size and load capacity are the same as those of other types of bearings, the outer diameter is the smallest, which is particularly suitable for support structures with limited radial installation dimensions.

Product details

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Model number Basic size Basic load rating Rated speed
Dynamic state Static Reference speed Limiting speed
d [mm] D [mm] B [mm] C [kN] C₀ [kN] [r/min] [r/min]
NAV4014
 70 110 40
NAV4013
 65 100 35
NAV4012
 60 95 35
NAV4011
 55 90 35
NAV4010
 50 80 30
NAV4009
 45 75 30
NAV4008
 40 68 28
NAV4007
 35 62 27
NAV4006
 30 55 25
NAV4005
 25 47 22
NAV4004
 20 42 22
NAV4003
 17 35 18
Model number Basic size Basic load rating Rated speed
Dynamic state Static Reference speed Limiting speed
d [in] D [in] B [in] C [Ibf] C₀ [Ibf] [r/min] [r/min]
NAV4014
NAV4013
NAV4012
NAV4011
NAV4010
NAV4009
NAV4008
NAV4007
NAV4006
NAV4005
NAV4004
NAV4003

Advantage

‌The main features of needle roller bearings include high load-bearing capacity, compact structure, low friction and high efficiency, good durability and high precision‌. ‌


‌1. High load-bearing capacity‌: Since the length of the needle roller is greater than the diameter, the needle roller bearing has a large contact area and can withstand large radial loads. This makes the needle roller bearing perform well in high-load situations.


‌2. Compact structure‌: The structure of the needle roller bearing is very compact, which can provide a high load-bearing capacity in a limited space, especially suitable for application scenarios with limited axial space.


‌3. Low friction and high efficiency‌: The needle roller bearing reduces friction through rolling contact between the rolling element and the inner and outer rings, improves transmission efficiency, and reduces energy loss.


‌4. Good durability and high precision‌: The needle roller bearing uses wear-resistant materials, has high manufacturing precision, can maintain stable performance in harsh working environments, and has a long service life.


‌5. Strong adaptability‌: Needle roller bearings are suitable for a variety of different working environments and working conditions, and can be widely used in various mechanical equipment to ensure the normal operation of the equipment.


‌6. Simple structure‌: The needle roller bearing has a simple structure, a small contact area between the needle roller and the inner and outer rings, and can withstand high speeds.


These characteristics make needle roller bearings widely used in mechanical equipment, especially in situations that require high load capacity, compact structure and low friction.