Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7021 ACD/P4A

7021 ACD/P4A

Dimensions

d		105	mm
D		160	mm
B		26	mm
d₁		121.9	mm
d₂		121.9	mm
D₁		143.1	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		44	mm

Abutment dimensions

d_a	min.	114	mm
d_b	min.	114	mm
D_a	max.	151	mm
D_b	max.	155	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		125.6	mm

Calculation data

Basic dynamic load rating	C	90.4	kN
Basic static load rating	C₀	93	kN
Fatigue load limit	P_u	3.4	kN
Attainable speed for grease lubrication		7500	r/min
Attainable speed for oil-air lubrication		12000	r/min
Ball diameter	D_w	17.462	mm
Number of balls	z	21
Reference grease quantity	G_ref	20.4	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	560	N
Static axial stiffness, preload class A		279	N/µm
Preload class B	G_B	1120	N
Static axial stiffness, preload class B		365	N/µm
Preload class C	G_C	2240	N
Static axial stiffness, preload class C		484	N/µm
Preload class D	G_D	4480	N
Static axial stiffness, preload class D		655	N/µm
Calculation factors
Calculation factor	f	1.15
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.05
Calculation factor	f_2D	1.08
Calculation factor	f_HC	1
Calculation factor	e	0.68
Calculation factor (single, tandem)	Y₂	0.87
Calculation factor (single, tandem)	Y₀	0.38
Calculation factor (single, tandem)	X₂	0.41
Calculation factor (back-to-back, face-to-face)	Y₁	0.92
Calculation factor (back-to-back, face-to-face)	Y₂	1.41
Calculation factor (back-to-back, face-to-face)	Y₀	0.76
Calculation factor (back-to-back, face-to-face)	X₂	0.67

Mass

Mass bearing

1.59

Model Number: 7021 ACD/P4A
Inner Diameter：105mm Outer Diameter：160mm Width：26mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Super-precision bearings Angular contact ball bearings Angular contact ball bearings, super-precision
Details： Angular contact ball bearings, super-precision
Update date：2025-12-09
Application:car,reducer,manual Tools,drawing die,Perfusion device,power protection,small appliances,other accessories,Storage Device,vacuum suction cup,marine analysis and testing equipment
Similar models:S7021 CD/P4A S7021 CD/HCP4A 7021 ACD/P4AL 7021 CD/P4AL 7021 CD/HCP4AL 7021 CD/P4AH1 7021 CD/P4A 7021 CD/HCP4A S7021 ACD/P4A 7021 ACD/P4AH1
BEARING POWER International Trading Co.,Ltd. specialize in 7021ACD/P4A products，there is large inventory of SKF 7021 ACD/P4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 7021 ACD/P4A Which SKF 7021ACD/P4A 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	Type
100075	254	304.8	15.88	Seals
105051	266.7	317.5	15.88	Seals
21270	53.975	81	11.91	Seals
240/1060 CAF/W33	1060	1500	438	Bearings, units and housings
524225	962.025	-	-	Seals
60/900 MB	900	1280	170	Bearings, units and housings
57531	146.05	177.8	12.7	Seals
6304-RSL	20	52	15	Bearings, units and housings
IR 70x80x25 EGS	70	80	25	Seals
NU 2305 ECP	25	62	24	Bearings, units and housings
PFD 20 TR	20	-	-	Bearings, units and housings
WS 89444	220		41	Bearings, units and housings

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