Single Row Angular Contact Ball Bearings

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Design Variants

Misalignment

Cage

Tolerance

Internal clearance

DHK single row angular contact ball bearings are non-separable radial bearings, Due to their different contact angles , they have four design variants.

1) Contact angle with 15 , bearing designation with suffix C.

2) Contact angle with 25 , bearing designation with suffix AC.

3) Contact angle with 35 , bearing designation with suffix A.

4) Contact angle with 40 , bearing designation with suffix B.

Paired Bearings：

Single row angular contact ball bearings are ofen used as pairs. DHK can produced different arrangements bearing pairs, the customer can use the pairs direct so to save the mounting works and avoid the mistake of adjusting the mounting clearance. The frequently used arrangement pairs as the follows.

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DHK single row angular contact ball bearings are non-separable radial bearings, Due to their different contact angles , they have four design variants.
1) Contact angle with 15 , bearing designation with suffix C.
2) Contact angle with 25 , bearing designation with suffix AC.
3) Contact angle with 35 , bearing designation with suffix A.
4) Contact angle with 40 , bearing designation with suffix B.

Paired Bearings：
Single row angular contact ball bearings are ofen used as pairs. DHK can produced different arrangements bearing pairs, the customer can use the pairs direct so to save the mounting works and avoid the mistake of adjusting the mounting clearance. The frequently used arrangement pairs as the follows.
Single row angular contact ball bearings have a very limited ability to accommodate misalignments. Any operating misalignments applied to this bearings will reduce their service life and generates higher running noise.
Normally, up to 2 angular minutes misalignment form the centre p0stion does not effact the bearings negatively.
DHK single row angular contact ball bearings are fitted with plastic cage (suffix TVP) as standard. Large size have machined solid brass(Suffix M) fitted as standard.
On reguest, DHK also can produce this bearing with pressed steel cage(suffix JP) or phenolic resin cage(Suffix TPA).

DHK single row angular contact ball bearings are produced to normal tolerance class(PN) as standard.

On request, DHK also can produce the bearings with closer tolerance, such as P6, P5 or P4.

Detailed values are listed in chapter of tolerance of redial bearing, page 8.

Tolerances for DHK single row angular contact ball bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

PN/(Normal)

Nominal Bore diameter		Deviation dmp	Variation Vdp Series			Variation Vdmp	Taper bore 1:12 Deviation/ Variation
>	<=	△dmp	7．8．9	0．1	2．3．4	Vdmp	△dmp	△d1mp-dmp	Vdp
2.5 10		0 -8	10	8	6	6	+15 0	+15 0	10
10 18		0 -8	10	8	6	6	+18 0	+18 0	10
18 30		0 -10	13	10	8	8	+21 0	+21 0	13
30 50		0 -12	15	12	9	9	+25 0	+25 0	15
50 80		0 -15	19	19	11	11	+30 0	+30 0	19
80 120		0 -20	25	25	15	15	+35 0	+35 0	25
120 180		0 -25	31	31	19	19	+40 0	+40 0	31
180 250		0 -30	38	38	23	23	+46 0	+46 0	38
250 315		0 -35	44	44	26	26	+52 0	+52 0	44
315 400		0 -40	50	50	30	30	+57 0	+57 0	50
400 500		0 -45	56	56	34	34	+63 0	+63 0	56
500 630		0 -50	63	63	38	38	+70 0	+70 0
630 800		0 -75					+80 0	+80 0
800 1000		0 -100					+90 0	+90 0
1000 1250		0 -125					+105 0	+105 0
1250 1600		0 -160
1600 2000		0 -200

Outer ring

PN/(Normal)

Nominal Outer diameter		Deviation	Variation Vdp Series			Sealed bearing	Variation	Radial runout
>	<=	△Dmp	7．8．9	0．1	2．3．4	2 3 4	VDmp	Kea
6 18		0 -8	10	8	6	10	6	15
18 30		0 -9	12	9	7	12	7	15
30 50		0 -11	14	11	8	16	8	20
50 80		0 -13	16	13	10	20	10	25
80 120		0 -15	19	19	11	26	11	35
120 150		0 -18	23	23	14	30	14	40
150 180		0 -25	31	31	19	38	19	45
180 250		0 -30	38	38	23		23	50
250 315		0 -35	44	44	26		26	60
315 400		0 -40	50	50	30		30	70
400 500		0 -45	56	56	34		34	80
500 630		0 -50	63	63	38		38	100
630 800		0 -75	94	94	55		55	120
800 1000		0 -100	125	125	75		75	140
1000 1250		0 -125						160
1250 1600		0 -160						190
1600 2000		0 -200						220
2000 2500		0 -250						250

Dimensions and Parameters

Inquiry	Designations	Boundary dimensions					Load ratings[KN]		Speed ratings[rpm]		Mass
Inquiry	Designations	d	D	B	r1,r2 Min	a ≈	Dynmic Cr	stat Cor	grease	oil	Mass
	7211C	55	100	21	1.5	0.6	53	40	8000	10000	0.61
	7211AC	55	100	21	1.5	0.6	50.5	38.2	7100	10000	0.61
	7211B	55	100	21	1.5	1	46.5	36	5300	7000	0.64
	7311C	55	120	29	2	1	91.8	65.6	7000	8700	1.71
	7311AC	55	120	29	2	1	88.3	63.2	5000	6700	1.42
	7311B	55	120	29	2	1	78	56	4800	6300	1.4
	7012C	60	95	18	1.1	0.6	38.2	32.6	5600	7500	0.4
	7012AC	60	95	18	1.1	0.6	36.2	31.6	5600	7500	0.4
	7212C	60	110	22	1.5	0.6	61	48.3	5300	7000	0.8
	7212AC	60	110	22	1.5	0.6	58.2	46	5300	7000	0.8
	7212B	60	110	22	1.5	1	56	44	4800	6300	0.8
	7312C	60	130	31	2.1	1.1	105	76.3	4800	6300	1.7
	7312AC	60	130	31	2.1	1.1	101	73.4	4800	6300	2.06
	7312B	60	130	31	2.1	1.1	90	65.5	4300	5600	1.8
	7412AC	60	150	35	2.1	1.1	132	95.3	4300	5600	3.55
	7412B	60	150	35	2.1	1.1	118	86.3	4300	5600	3.56
	7013C	65	100	18	1.1	0.6	40.1	35.4	5300	7000	0.43
	7013AC	65	100	18	1.1	0.6	38	34.1	5300	7000	0.43
	7213C	65	120	23	1.5	0.6	70	54.8	4800	6300	1
	7213AC	65	120	23	1.5	0.6	66.6	52.3	4800	6300	1
	7213B	65	120	23	1.5	1	64	53	4500	6000	1
	7313C	65	140	33	2.1	1.1	121	88.9	4300	5600	2.23
	7313AC	65	140	33	2.1	1.1	116	85.5	4300	5600	2.23
	7313B	65	140	33	2.1	1.1	102	75	4000	5300	2.2
	7014C	70	110	20	1.1	0.6	48.3	43.2	5000	6700	0.6
	7014AC	70	110	20	1.1	0.6	45.7	42.7	5000	6700	0.6
	7214C	70	125	24	1.5	0.6	72.9	65	4500	6200	1.1
	7214AC	70	125	24	1.5	0.6	75.8	62	4500	6200	1.1
	7214B	70	125	24	1.5	1	69.5	58.5	4300	5600	1.1
	7314C	70	150	35	2.1	1.1	134	100	4000	5300	2.67
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