Split Cage Needle Roller Bearing with Inner Ring Na4903 Na 4903 Single Row Needle Roller Bearing for Lawn Mower

• Cage: With Cage
• Rows Number: Single
• Load Direction: Radial Bearing
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: NA4903 NA 4903
• Style: With Outer Ring, With Inner Ring
• Material: Bearing Steel
• Type: Open
• Precision Rating: ABEC-1
• Application: Automobiles, Motorcycles, Mopeds, Power Tools,
• Certificate: ISO 9001:2015,Reach and RoHS
• Material of Cage: Plastic Spring or Steel Spring
• Weight: 32.8 G
• Transport Package: Cartons
• Trademark: RUNSTAR
• Origin: Fujian, China
• HS Code: 8482102000
• Production Capacity: 100000 Piece/Pieces Per Month
• Package Size: 32.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 17.000kg

Product Description

      Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. Such rollers are called needle rollers. Although the cross-sectional area is small, roller bearings still have a high load-bearing capacity due to the fact that the entire surface of the roller carries the load, they are widely used in application with a limited radial installation dimensions.
    they are widely used in automobiles, motorcycles, mopeds, power tools, textile machinery, agricultural machinery, industrial sewing machines, construction machinery, etc.



 

PRODUCTS CATALOGUE

NA Series of Needle Roller Bearing

Bearing No.	Boundary dimensions(mm)				Basic load ratings(N)		speeds(rpm)	Weight (g)
	d	Fw	D	B	Cr	Cor	Oil
NA4900	10	14	22	13	8006	9000	23700	21
NA4901	12	16	24	13	5047	6352	20000	25.1
NA4902	15	20	28	13	6447	9053	18800	32
NA4903	17	22	30	13	7010	10010	17000	32.8
NA4904	20	25	37	17	11912	16594	16200	70.2
NA49/22	22	28	39	17	12996	19175	14360	76
NA4905	25	30	42	17	13452	20475	13832	76
NA49/28	28	32	45	17	13900	20100	13832	90.7
NA49/32	32	40	52	20	19000	32600	11134	150
NA4907	35	42	55	20	19800	41500	11134	151
NA4908	40	48	62	22	31036	63873	8567	123
NA4909	45	50	68	22	37000	96500	8052	260
NA4910	50	58	72	22	41000	72000	7526	264
NA4911	55	63	80	25	50600	96580	7156	386
NA4912	60	68	85	25	52800	110500	6022	412
NA4913	65	72	90	25	57500	110500	6022	435
NA4914	70	80	100	30	79000	154000	5111	712
NA4915	75	85	105	30	82000	158000	5111	765
NA4916	80	90	110	30	81000	170500	5111	870
NA4917	85	100	120	35	111000	237000	4600	1250
NA4918	90	105	125	35	114000	250000	4400	1312
NA4919	95	110	130	35	116000	260000	4200	1371
NA4920	100	115	140	40	120000	2740000	4000	1900
NA4922	110	125	150	40	132000	290000	3700	2070