small size needle roller bearing NA 4904 with crossed roller bearing RNA 4904

 

Needle roller bearings are bearings with cylindrical rollers that are small in diameter relative to their length. The modified roller/raceway profile prevents stress peaks to extend bearing service life.

 

BHR supplies needle roller bearings in many different designs, series and in a wide range of sizes, which make them appropriate for a wide variety of operating conditions and applications.

1. Needle roller and cage assembly

2. Drawn cup needle roller bearings

3. Needle roller bearings with machine rings

4. Alignment needle roller bearings

5. Universal joint bearings

6. Combined needle roller bearings

7. Needle roller thrust bearings

8. Cam follower, track rollers

 

Specifications: NA 4904 needle roller bearing
Fw	20mm
D	37mm
C	17mm
Bearing type	machined bearing without inner ring
Bearing number of row	single row needle roller bearing
Bearing cage type	steel cage bearing
Bearing closure type	open bearing, sealed bearing 2RS
Bearing material	steel bearings, stainless steel bearing

 

 

Needle roller bearing size

Shaft	Bearing	Mass	Dimensions (mm)				Basic Load Ratings		Limiting
Diameter	P.No.		Fw	D	C	r	Cr	Cor	Speed
mm		g				min.	kN	kN	rpm
5	NK 5/10TN	3.1	5	10	10	0.15	2.5	2	37000
	NK 5/12TN	3.7	5	10	12	0.15	3.05	2.99	37000
6	NK 6/10TN	4.7	6	12	10	0.15	2.33	2.2	33000
6	NK 6/12TN	5.7	6	12	12	0.15	3.3	3.45	33000
7	NK 7/10TN	6.9	7	14	10	0.3	3.33	3.15	31000
	NK 7/12TN	8.2	7	14	12	0.3	4.19	4.24	31000
8	NK 8/12TN	8.7	8	15	12	0.3	4.1	4.3	29000
	NK 8/16TN	12	8	15	16	0.3	4.9	5.4	29000
9	NK 9/12TN	10.3	9	16	12	0.3	4.75	5.3	28000
10	NK 10/12	10	10	17	12	0.3	5.01	5.82	27000
	NK 10/16	13	10	17	16	0.3	6.51	8.12	27000
12	NK 12/12	12	12	19	12	0.3	6.4	7.1	25000
	NK 12/16	16	12	19	16	0.3	9.1	11	25000