Angular-Contact Ball Bearings

Angular-Contact Ball Bearings

I. Basic Designation (Core)

Format: 7 + dimension-series code + bore code

1) Type Code

7: Single-row angular-contact ball bearing

2) Dimension Series (width + diameter)

Common series (same bore, outer-diameter and width increase sequentially):

718 (18): Ultra-thin-wall, light-load, high-speed

719 (19): Thin-wall, light-load, high-speed

70 (00): Light series, medium-load, high-speed

72 (02): Medium series, medium-to-heavy-load, general-purpose

73 (03): Heavy series, heavy-load, high rigidity

3) Bore Code (d)

00 = 10 mm

01 = 12 mm

02 = 15 mm

03 = 17 mm

04 and above = code × 5 (e.g. 04 = 20 mm, 08 = 40 mm)

II. Suffix Codes (contact angle, mounting arrangement, tolerance class, cage, etc.)

1) Contact Angle (α)

C: 15° (high-speed, low axial load)

AC: 25° (general-purpose, combined radial-axial load)

B: 40° (heavy-load, large axial load)

2) Mounting Arrangement (double / multi-bearing sets)

DB: Back-to-back mounting (high rigidity, good overturning-moment resistance)

DF: Face-to-face mounting (good concentricity, low heat generation)

DT: Tandem mounting (same-direction assembly, large axial-load capacity)

3) Tolerance Class (placed at the end)

P0 (often omitted), P6, P5, P4, P2 (higher precision with smaller numerical value)

4) Other Common Suffixes

Z, 2Z: Single-sided / double-sided metal shields

RS, 2RS: Single-sided / double-sided rubber seals

TN, TVP: Engineering-plastic cage

C3: Radial clearance larger than normal group

Model	d(mm)	D(mm)	B(mm)	Cr(kN)	Cor(kN)	Grease (r/min)	Oil (r/min)	W(kg)
7000C	10	26	8	4.92	2.25	19000	28000	0.018
7000AC	10	26	8	4.75	2.12	19000	28000	0.018
7001C	12	28	8	5.30	2.60	18000	26000	0.021
7001AC	12	28	8	5.10	2.45	18000	26000	0.021
7002C	15	32	9	6.25	3.42	17000	24000	0.028
7002AC	15	32	9	5.95	3.25	17000	24000	0.028
7003C	17	35	10	6.60	3.85	16000	22000	0.036
7003AC	17	35	10	6.30	3.68	16000	22000	0.036
7004C	20	42	12	10.5	6.08	14000	19000	0.064
7004AC	20	42	12	10.0	5.78	14000	19000	0.064
7005C	25	47	12	11.7	7.40	13000	17000	0.076
7005AC	25	47	12	11.3	6.95	13000	17000	0.076
7006C	30	55	13	15.2	10.2	11000	15000	0.110
7006AC	30	55	13	14.5	9.60	11000	15000	0.110
7200C	10	30	9	5.82	2.95	18000	26000	0.030
7200AC	10	30	9	5.58	2.82	18000	26000	0.030
7201C	12	32	10	7.35	3.52	17000	24000	0.036
7201AC	12	32	10	7.00	3.35	17000	24000	0.036
7202C	15	35	11	8.05	4.18	16000	22000	0.045
7202AC	15	35	11	7.70	3.98	16000	22000	0.045
7203C	17	40	12	9.68	5.08	14000	20000	0.062
7203AC	17	40	12	9.25	4.82	14000	20000	0.062
7204C	20	47	14	12.8	7.42	13000	17000	0.103
7204AC	20	47	14	12.2	7.02	13000	17000	0.103
7205C	25	52	15	14.2	8.80	11000	15000	0.125
7205AC	25	52	15	13.5	8.30	11000	15000	0.125
7206C	30	62	16	23.0	14.7	9000	13000	0.190
7206AC	30	62	16	22.1	13.5	9000	13000	0.190
7207C	35	72	17	30.5	20.0	8000	11000	0.280
7207AC	35	72	17	29.2	18.8	8000	11000	0.280
7304C	20	52	15	18.7	10.4	12000	16000	0.138
7304AC	20	52	15	17.9	9.92	12000	16000	0.138
7305C	25	62	17	26.4	15.8	10000	14000	0.230
7305AC	25	62	17	25.3	15.0	10000	14000	0.230
7306C	30	72	19	34.2	20.8	8500	11000	0.340
7306AC	30	72	19	32.8	19.8	8500	11000	0.340