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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

210 Results

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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]
NA6907
 35 55 36
NA6906
 30 47 30
NA6905
 25 42 30
NA6904
 20 37 30
NA6903
 17 30 23
NA6902
 15 28 23
NA6901
 12 24 22
NA6900
 10 22 22
NA4944
 220 300 80
NA4940
 200 280 80
NA4938
 190 260 69
NA4936
 180 250 69
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]
NA6907
NA6906
NA6905
NA6904
NA6903
NA6902
NA6901
NA6900
NA4944
NA4940
NA4938
NA4936

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.