Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71821 CD/P4

71821 CD/P4

Dimensions

d		105	mm
D		130	mm
B		13	mm
d₁		113.2	mm
d₂		113.2	mm
D₁		122	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		22.3	mm

Abutment dimensions

d_a	min.	109.6	mm
d_b	min.	109.6	mm
D_a	max.	125.4	mm
D_b	max.	128	mm
r_a	max.	1	mm
r_b	max.	0.3	mm
d_n		114.6	mm

Calculation data

Basic dynamic load rating	C	22.9	kN
Basic static load rating	C₀	30	kN
Fatigue load limit	P_u	1.18	kN
Attainable speed for grease lubrication		9000	r/min
Attainable speed for oil-air lubrication		14000	r/min
Ball diameter	D_w	7.144	mm
Number of balls	z	35
Reference grease quantity	G_ref	4	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	130	N
Static axial stiffness, preload class A		96	N/µm
Preload class B	G_B	390	N
Static axial stiffness, preload class B		167	N/µm
Preload class C	G_C	780	N
Static axial stiffness, preload class C		250	N/µm
Calculation factors
Calculation factor	f	1.44
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.09
Calculation factor	f_2C	1.16
Calculation factor	f_HC	1
Calculation factor	f₀	17.4

Mass

Mass bearing

0.32

Model Number: 71821 CD/P4
Inner Diameter：105mm Outer Diameter：130mm Width：13mm
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：2021-06-08
Application:Display Devices,tapered grinder,CNC,molding machine,Textile Accessories,Grinding and polishing equipment,Gripper Swing,expectoration machine,Anti-defibrillation pacing,Security Equipment,squeeze machine etc
Similar models:71821 CD/P4 71821 ACD/HCP4 71821 ACD/P4 71821 CD/HCP4
BEARING POWER International Trading Co.,Ltd. specialize in 71821CD/P4 products，there is large inventory of SKF 71821 CD/P4 Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71821 CD/P4 Which SKF 71821CD/P4 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
11340	28.575	50.8	6.35	Seals
59300	150.8252	177.8	12.7	Seals
6002/HR22Q2	15	32	9	Bearings, units and housings
6030-Z	150	225	35	Bearings, units and housings
70x110x10 HMS5 V	70	110	10	Seals
BD-C 30/530 KM-OH 30/530 H	500	780	185	Bearings, units and housings
BD-C 3048 K-AOH 3048	220	360	92	Bearings, units and housings
GS 81112	60	85	4.75	Bearings, units and housings
N 317 ECM	85	180	41	Bearings, units and housings
HJ 230 EC	150	193.3	19.5	Bearings, units and housings
IR 9x12x16	9	12	16	Bearings, units and housings
SYNT 45 LTF	45	-	-	Bearings, units and housings

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Hot number： 11123 19219 3320 A 7019 ACB/HCP4AL 71919 ACE/P4AH1 99827 C 5918-2CS5V/GEM9 EE 763330/763410 N 1016 KPHA/HC5SP NJ 2248 MA NNTR 50x130x65.2ZL PCM 10010530 M PCMW 386201.5 E WS 81256 YAR 212-204-2F