d - 20 mm

D - 52 mm

B - 15 mm

d₁ - - 27.5 mm

D₁ - - 40.8 mm

a - 25 mm

r_1,2 - min. - 1.1 mm

d_a - min. - 27 mm

D_a - max. - 45 mm

r_a - max. - 1 mm

Basic dynamic load rating - C - 32 kN

Basic static load rating - C₀ - 21.6 kN

Fatigue load limit - P_u - 0.93 kN

Reference speed - 18000 r/min

Limiting speed - 24000 r/min

Calculation factor - k_a - 1.1

Calculation factor - e - 0.95

Calculation factor - X - 0.6

Calculation factor - Y₀ - 0.58

Calculation factor - Y₁ - 0.66

Calculation factor - Y₂ - 1.07

Mass bearing - 0.18 kg

• Model Number: QJ 304 MA
• Inner Diameter：52mm Outer Diameter：20mm Width：15mm
• Type：Angular Contact Ball Bearings
• Update date：2025-12-16
• Application:leather processing,powder metallurgy,animal anatomy,non-ferrous metal alloy,electrocardiograph,Air,laser devices,Garment Accessories,security equipment,glass,crimping tools
• Similar models:SKF 7304BECBM CYSD 7304DB AST 5304ZZ INA F-230434.09 CX 7304B-UX CX 7304C-UX ZEN S5304-2RS NTN 7304BG NTN 7304DF NACHI 7304BDF
• BEARING POWER International Trading Co.,Ltd. specialize in QJ304MA products，there is large inventory of SKF QJ 304 MA . We has been built up long-term cooperation with SKF company, could make a bulk order of the QJ 304 MA Which SKF QJ304MA 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
  5209AZZ	45	85	30.2	NACHI	Angular Contact Ball Bearings
  3NCHAR019	95	145	24	KOYO	Angular Contact Ball Bearings
  64450/64700D+X5S-64450	114,3	177,8	92,075	Timken	Tapered Roller Bearings
  7019 A-UO	95	145	48	CX	Angular Contact Ball Bearings
  70M6DF/GMP5	6	17	12	NTN	Angular Contact Ball Bearings
  CRF-33008 A	40,000	68,000	22,000	CRAFT	Wheel Bearings
  7213 B	65	120	23	CX	Angular Contact Ball Bearings
  KGHA20-PP	20		47	INA	Bearing Units
  LM3730	32	47	30,3	NSK	Needle Roller Bearings
  LM603049/011	45,2	77,8	19,8	SNR	Tapered Roller Bearings
  MR117ZZ	7	11	3	ISB	Deep Groove Ball Bearings
  NAO12X28X12-IS1	12	28	12	INA	Needle Roller Bearings
  NNU 4138 M/W33	190	320	128	ISB	Cylindrical Roller Bearings
  NNU4938K	190	260	69	CX	Cylindrical Roller Bearings
  NU321-E-MA6	105	225	49	NKE	Cylindrical Roller Bearings
  TSM 22	22	42	28	ISB	Plain Bearings
  NA6918	90	125	63	INA	NEEDLE BEARINGS
  UCSF210-31S6H1	1.9375			FYH	STAINLESS STEEL PILLOW BLOCKS
  6012.2ZNR	60	95	18	STEYR	DEEP GROOVE BALL BEARINGS
  NX-15-Z	24	15		CONSOLIDATED	NEEDLE BEARINGS