d - 440 mm

D - 600 mm

B - 74 mm

C - 74 mm

r min. - 4 mm

da min. - 475 mm

Da max. - 572 mm

ra max. - 3 mm

Weight - 60,2 Kg

Basic dynamic load rating (C) - 395 kN

Basic static load rating (C0) - 680 kN

Calculation factor (f0) - 16,6

• Model Number: 6988
• Inner Diameter：440mm Outer Diameter：600mm Width：74mm
• Type：Deep Groove Ball Bearings
• Update date：2025-04-22
• Application:surgical instruments,education model Instruments,Pneumatic Control Valves,medical equipment,relay,Optical detection,axle lathe,Cylinder Special,Machine Tool Accessories,economic mold,Rolling mill gear box
• Similar models:KOYO 6988 NTN 6988 NSK 6988
• BEARING POWER International Trading Co.,Ltd. specialize in 6988 products，there is large inventory of NSK 6988 . We has been built up long-term cooperation with NSK company, could make a bulk order of the 6988 Which NSK 6988 is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  1221K+H221	105	190	36	CX	Self-Aligning Ball Bearings
  24024CE4	120	180	60	NSK	Spherical Roller Bearings
  30213	65	120	24,75	FBJ	Tapered Roller Bearings
  30328	140	300	67,75	CRAFT	Tapered Roller Bearings
  53203 + U203	17	38	15	FAG	Thrust Ball Bearings
  6204F600	20,000	47,000	14,000	SNR	Deep Groove Ball Bearings
  6317NR	85	180	41	KOYO	Deep Groove Ball Bearings
  7020 CB/P4AL	150	100	24	SKF	Angular Contact Ball Bearings
  7060B	300,000	460,000	74,000	NTN	Angular Contact Ball Bearings
  GEZM 300 ES	76,2	120,65	114,3	SIGMA	Plain Bearings
  NJ 2326 E	130	280	93	NACHI	Cylindrical Roller Bearings
  NNF5032PP	160	240	109	ZEN	Cylindrical Roller Bearings
  NUP312-E-MA6	60	130	31	NKE	Cylindrical Roller Bearings
  P6009-GB	45	75	16	ZEN	Deep Groove Ball Bearings
  NU2972E	360	480	72	FAG	CYLINDRICAL ROLLER BEARINGS
  SL181836	180	225	22	INA	CYLINDRICAL ROLLER BEARINGS
  LS-29	11.0000	17.5000	2.2500	FED	DEEP GROOVE BALL BEARINGS
  51313				CONSOLIDATED	THRUST BALL BEARINGS
  53232-U				CONSOLIDATED	THRUST BALL BEARINGS WITH SPHERICAL SEATING RING
  SN-217..22217	85	-	90	CONSOLIDATED	PILLOW BLOCKS