d - 45 mm

D - 68 mm

B - 22 mm

F - 52 mm

r_min - 0,6 mm

s - 1 mm / Axial displacement

m - 271 g / Weight

C_r - 51000 N / Dynamic load rating (radial)

C_0r - 73000 N / Static load rating (radial)

C_ur - 12600 N / Fatigue limit load, radial

n_G - 8600 1/min / Limiting speed

n_B - 4750 1/min / Reference speed

dimension series 49, to DIN 617/ISO 1206

• Model Number: NA4909
• Inner Diameter：45mm Outer Diameter：68mm Width：22mm
• Type：Needle Roller Bearings
• Update date：2025-04-23
• Application:machine lathe,scientific instruments,joint protection,motor,forklift truck,Display Devices,expectoration machine,Internal thread type,Spectrum Products,packing equipment,Spectrum Products
• Similar models:CRAFT NA4909-2RS IKO RNA4909U ISO RNA4909-2RS IKO NA4909U Timken RNA4909RS NTN NA4909S INA RNA4909-2RSR SKF NA4909.2RS Timken NA4909 NTN RNA4909R
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• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  239/670 KCW33+H39/670	670	900	170	ISO	Spherical Roller Bearings
  22324 KCW33+H2324	120	260	86	ISO	Spherical Roller Bearings
  33108A	40	75	26	ZVL	Tapered Roller Bearings
  54217-MP	70	125	59,2	NKE	Thrust Ball Bearings
  6002Z	15	32	9	KOYO	Deep Groove Ball Bearings
  6020ZZ	100,000	150,000	24,000	NTN-SNR	Deep Groove Ball Bearings
  BT2B 332911 B/HB1	635	447,675	223,838	SKF	Tapered Roller Bearings
  GE 008 XES	8	19	12	ISO	Plain Bearings
  FCDP 112164600	560	820	600	ISB	Cylindrical Roller Bearings
  GRAE20RR	20	47	21,44	Timken	Deep Groove Ball Bearings
  HK1010	10	14	10	CRAFT	Needle Roller Bearings
  JB1240	120	240	160	KOYO	Cylindrical Roller Bearings
  K8X11X8	8,000	11,000		NTN	Needle Roller Bearings
  MR182616+MI-151816	23,812	41,275	25,65	NTN	Needle Roller Bearings
  NJ18/800	800	980	82	CX	Cylindrical Roller Bearings
  NU422-M1	110	280	65	FAG	Cylindrical Roller Bearings
  R-412	1,2	4	1,8	NMB	Deep Groove Ball Bearings
  81134			14	SKF	THRUST ROLLER BEARINGS
  MM55BS100P/4	55	100	20	CONSOLIDATED	ANGULAR CONTACT BALL SCREW SUPPORT BEARINGS
  SAF-638615/16..ROLLER	6.9375			CONSOLIDATED	PILLOW BLOCKS