d - 4 mm

D - 9 mm

B - 3.5 mm

d₁ - - 5.2 mm

D₂ - - 8.1 mm

r_1,2 - min. - 0.1 mm

d_a - min. - 4.6 mm

d_a - max. - 5.1 mm

D_a - max. - 8.4 mm

r_a - max. - 0.1 mm

Basic dynamic load rating - C - 0.54 kN

Basic static load rating - C₀ - 0.18 kN

Fatigue load limit - P_u - 0.07 kN

Reference speed - 140000 r/min

Limiting speed - 70000 r/min

Calculation factor - k_r - 0.015

Calculation factor - f₀ - 10

Mass bearing - 0.001 kg

• Model Number:628/4-2Z
• Inner Diameter：9mm Outer Diameter：4mm Width：3,5mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-11
• Application:nail products,Internal thread type,Cutting Machine,Broadcasting System,Blood coagulation reagent,Spectrum Products,position switch,thread processing machine,Storage Device,Pneumatic Control Elements,insect experimental analysis instrument
• Similar models:ISB SS628/7-ZZ ISB 628-2RS SKF 628-Z ISB 628/6-ZZ ZEN F628-2Z KOYO 3NC628HT4GF SKF 628/4-2Z ZEN 1628-2Z KOYO SE628ZZSTPR ISO 628/6ZZ
• BEARING POWER International Trading Co.,Ltd. specialize in 628/4-2Z products，there is large inventory of SKF 628/4-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the 628/4-2Z Which SKF 628/4-2Z 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
  ALP203	17		30,2	KOYO	Bearing Units
  CRI-4030	200	330	180	NTN	Tapered Roller Bearings
  GEH140XT-2RS	140	210	100	LS	Plain Bearings
  HMK2428	24	31	28	NTN	Needle Roller Bearings
  KTSG16-PP-AS	16	26		INA	Linear Bearings
  MJ-18161	28,575	34,925	25,4	Timken	Needle Roller Bearings
  NA59/22	22	39	23	NTN	Needle Roller Bearings
  NN 49/1320 W33	1320	1720	400	ISB	Cylindrical Roller Bearings
  RNAF506520	50	65	20	NSK	Needle Roller Bearings
  SA 17 ES 2RS	17	30	14	ISB	Plain Bearings
  SCJ40UU	40			Samick	Linear Bearings
  UCFCX09-28	44,45			FYH	Bearing Units
  NCF3012V	60	95	26	FAG	CYLINDRICAL ROLLER BEARINGS
  20309	45	100	25	SKF	SPHERICAL ROLLER BEARINGS
  CSCA035	3.5000	4.0000	.2500	INA	DEEP GROOVE BALL BEARINGS
  Y-80-L	.7500	2.5000	1.5625	RBC	NEEDLE BEARINGS
  JA042XPO	4.2500	4.7500	.2500	KAYDON	FOUR POINT ANGULAR CONTACT BALL BEARINGS
  2914	95	70		SKF	THRUST BALL BEARINGS
  207-ZZ	35	72	17	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  IR-30x35x17	30		17	CONSOLIDATED	NEEDLE BEARINGS