Bearing Specification 68 Series
Basic | Bore d | Outer Diameter D | Width W | Radius r | Basic Load Rating KN | Maximum Run out Speed | Weight | ||||||
| Dynamic | Static | Grease | Oil | ||||||||||
| mm | inch | mm | inch | mm | inch | mm | inch | C | CO | r/min | r/min | ||
685 | 5 | 0.1969 | 11 | 0.4331 | 3 | 0.1181 | 0.1 | 0.006 | 0.715 | 0.282 | 35000 | 45000 | 0.0011 |
686 | 6 | 0.2362 | 13 | 0.5118 | 3.5 | 0.1378 | 0.15 | 0.006 | 1.08 | 0.44 | 33000 | 42000 | 0.0019 |
687 | 7 | 0.2756 | 14 | 0.5512 | 3.5 | 0.1378 | 0.15 | 0.006 | 1.17 | 0.51 | 31000 | 40000 | 0.0021 |
688 | 8 | 0.3150 | 16 | 0.6299 | 4 | 0.1575 | 0.2 | 0.008 | 1.26 | 0.585 | 29000 | 38000 | 0.0031 |
689 | 9 | 0.3543 | 17 | 0.6693 | 4 | 0.1575 | 0.2 | 0.008 | 1.72 | 0.82 | 28000 | 36000 | 0.0032 |
6800 | 10 | 0.3937 | 19 | 0.7480 | 5 | 0.1969 | 0.3 | 0.012 | 1.83 | 0.925 | 26000 | 34000 | 0.005 |
6800W7 | 10 | 0.3937 | 19 | 0.7480 | 7 | 0.2756 | 0.3 | 0.012 | 1.83 | 0.925 | 26000 | 34000 | 0.006 |
6801 | 12 | 0.4724 | 21 | 0.8268 | 5 | 0.1969 | 0.3 | 0.012 | 1.92 | 1.04 | 22000 | 30000 | 0.006 |
6802 | 15 | 0.5906 | 24 | 0.9449 | 5 | 0.1969 | 0.3 | 0.012 | 2.08 | 1.26 | 20000 | 28000 | 0.007 |
6803 | 17 | 0.6693 | 26 | 1.0236 | 5 | 0.1969 | 0.3 | 0.012 | 2.81 | 1.72 | 19000 | 26000 | 0.008 |
6804 | 20 | 0.7874 | 32 | 1.2598 | 7 | 0.2756 | 0.3 | 0.012 | 4 | 2.47 | 17000 | 22000 | 0.019 |
6805 | 25 | 0.9843 | 37 | 1.4567 | 7 | 0.2756 | 0.3 | 0.012 | 4.3 | 2.95 | 15000 | 19000 | 0.022 |
6806 | 30 | 1.1811 | 42 | 1.6535 | 7 | 0.2756 | 0.3 | 0.012 | 4.7 | 3.65 | 13000 | 17000 | 0.026 |
6807 | 35 | 1.3780 | 47 | 1.8504 | 7 | 0.2756 | 0.3 | 0.012 | 4.9 | 4.05 | 11000 | 15000 | 0.029 |
6808 | 40 | 1.5748 | 52 | 2.0472 | 7 | 0.2756 | 0.3 | 0.012 | 5.1 | 4.4 | 9000 | 13000 | 0.033 |
6809 | 45 | 1.7717 | 58 | 2.2835 | 7 | 0.2756 | 0.3 | 0.012 | 6.4 | 5.65 | 7000 | 11000 | 0.04 |
6810 | 50 | 1.9685 | 65 | 2.5591 | 7 | 0.2756 | 0.3 | 0.012 | 6.6 | 6.1 | 5000 | 9000 | 0.052 |
ABEC-1 TOLERANCE CLASS ABEC-1 (P0)
INNER RING | Tolerance in um/s | |||||||||||
d mm | Δdmp | 9 | Vdp⊃2;)0,1 Diameter Series | 2,3,4 | Vdmp | Kia | ΔBs | Vbs | ||||
over | including | high | low | max | max | max | high | low | max | |||
1)0.6 | 2.5 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | 0 | -40 | 12 | |
2.5 | 10 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | 0 | -120 | 15 | |
10 | 18 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | 0 | -120 | 20 | |
18 | 30 | 0 | -10 | 13 | 10 | 8 | 8 | 13 | 0 | -120 | 20 | |
30 | 50 | 0 | -12 | 15 | 12 | 9 | 9 | 15 | 0 | -120 | 20 | |
50 | 80 | 0 | -15 | 19 | 19 | 11 | 11 | 20 | 0 | -150 | 25 | |
OUTER RING | Tolerance in um/s | |||||||||||
D mm | Δdmp | VDp2)4)Open Bearings Diameter Series | Capped Bearings2)3) | Vdmp | Kia | ΔBs | Vbs | |||||
9 | 0，1 | 2，3，4 | 2，3，4 | |||||||||
over | including | high | low | max | max | max | high | low | max | |||
1）2.5 | 6 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 15 | Identical to ΔBs and VBs of inner ring of same bearing | ||
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 | |||
ABEC-3 TOLERANCE CLASS ABEC-3 (P6)
INNER RING | Tolerance in um/s | |||||||||||
d mm | Δdmp | 9 | Vdp⊃2;)0,1 Diameter Series | 2,3,4 | Vdmp | Kia | ΔBs | Vbs | ||||
over | including | high | low | max | max | max | high | low | max | |||
11)0.6 | 2.5 | 0 | -7 | 9 | 7 | 5 | 5 | 5 | 0 | -40 | 12 | |
2.5 | 10 | 0 | -7 | 9 | 7 | 5 | 5 | 6 | 0 | -120 | 15 | |
10 | 18 | 0 | -7 | 9 | 7 | 5 | 5 | 7 | 0 | -120 | 20 | |
18 | 30 | 0 | -8 | 10 | 8 | 6 | 6 | 8 | 0 | -120 | 20 | |
30 | 50 | 0 | -10 | 13 | 10 | 8 | 8 | 10 | 0 | -120 | 20 | |
50 | 80 | 0 | -12 | 15 | 15 | 9 | 9 | 10 | 0 | -150 | 25 | |
OUTER RING | Tolerance in um/s | |||||||||||
D mm | Δdmp | VDp2)4)Open Bearings Diameter Series | Capped Bearings2)3) | Vdmp | Kia | ΔBs | Vbs | |||||
9 | 0，1 | 2，3，4 | 2,3,4 | |||||||||
over | including | high | low | max | max | max | high | low | max | |||
1）2.5 | 6 | 0 | -7 | 9 | 7 | 5 | 9 | 5 | 8 | Identical to ΔBs and VBs of inner ring of same bearing | ||
6 | 18 | 0 | -7 | 9 | 7 | 5 | 9 | 5 | 8 | |||
18 | 30 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 9 | |||
30 | 50 | 0 | -9 | 11 | 9 | 7 | 13 | 7 | 10 | |||
50 | 80 | 0 | -11 | 14 | 11 | 8 | 16 | 8 | 13 | |||
80 | 120 | 0 | -13 | 16 | 16 | 10 | 20 | 10 | 18 | |||
120 | 150 | 0 | -15 | 19 | 19 | 11 | 25 | 11 | 20 | |||
ABEC-5 TOLERANCE CLASS ABEC-5 (P5)
INNER RING | Tolerance in um/s | |||||||||||
d mm | Δdmp | Vdp⊃2;)Diameter Series | Vdmp | Kia | Sd | Sis3) | ΔBs | Vbs | ||||
9 | 0,1,2,3,4 | |||||||||||
over | including | high | low | max | 3 | max | max | max | High | Low | max | |
1)0.6 | 2.5 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
2.5 | 10 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
10 | 18 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -80 | 5 |
18 | 30 | 0 | -6 | 6 | 5 | 3 | 4 | 8 | 8 | 0 | -120 | 5 |
30 | 50 | 0 | -8 | 8 | 6 | 4 | 5 | 8 | 8 | 0 | -120 | 5 |
50 | 80 | 0 | -9 | 9 | 7 | 5 | 5 | 8 | 8 | 0 | -150 | 6 |
OUTER RING | Tolerance in um/s | |||||||||||
D mm | Δdmp | Vdp⊃2;)Diameter Series | Vdmp | Kia | SD4) SD15) | Sea4）5） | ΔBs | Vbs | ||||
9 | 0,1,2,3,4 | |||||||||||
over | including | high | low | max | max | max | max | High | Low | max | ||
1)2.5 | 6 | 0 | -5 | 5 | 4 | 3 | 5 | 8 | 8 | 5 | ||
6 | 18 | 0 | -5 | 5 | 4 | 3 | 5 | 8 | 8 | 5 | ||
18 | 30 | 0 | -6 | 6 | 5 | 3 | 6 | 8 | 8 | 5 | ||
30 | 50 | 0 | -7 | 7 | 5 | 4 | 7 | 8 | 8 | 5 | ||
50 | 80 | 0 | -9 | 9 | 7 | 5 | 8 | 8 | 10 | 6 | ||
80 | 120 | 0 | -10 | 10 | 8 | 5 | 10 | 9 | 11 | 8 | ||
120 | 150 | 0 | -11 | 11 | 8 | 6 | 11 | 10 | 13 | 8 | ||
ABEC-7 TOLERANCE CLASS ABEC-7 (P4)
INNER RING | Tolerance in um/s | ||||||||||||||
d mm | Δdmp | Δds | Vdp⊃2;)Diameter Series | Vdmp | Kia | Sd | Sia | ΔBs | Vbs | ||||||
7，8,9 | 1,7,2,3,4 | ||||||||||||||
over | including | high | low | high | low | max | max | max | max | max | High | low | Low | max | |
1)0.6 | 2.5 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | -40 | 2.5 |
2.5 | 10 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | -40 | 2.5 |
10 | 18 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -80 | -80 | 2.5 |
18 | 30 | 0 | -5 | 0 | -5 | 5 | 4 | 2.5 | 3 | 4 | 4 | 0 | -120 | -120 | 2.5 |
30 | 50 | 0 | -6 | 0 | -5 | 6 | 4 | 3 | 4 | 4 | 4 | 0 | -120 | -120 | 3 |
50 | 80 | 0 | -7 | 0 | -5 | 7 | 5 | 3.5 | 4 | 5 | 5 | 0 | -150 | -150 | 4 |
OUTER RING | Tolerance in um/s | ||||||||||||||
D mm | Δdmp | Δds | Vdp⊃2;)Diameter Series | Vdmp | Kia | Sd | Sia | ΔBs | Vbs | ||||||
7，8,9 | 1,7,2,3,4 | ||||||||||||||
over | including | high | low | high | low | max | max | max | max | max | High | low | max | ||
1)2.5 | 6 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 3 | 4 | 5 | Identical to ΔBs and VBs of inner ring of same bearing | 2.5 | ||
6 | 18 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 3 | 4 | 5 | 2.5 | |||
18 | 30 | 0 | -5 | 0 | -5 | 5 | 4 | 2.5 | 4 | 4 | 5 | 2.5 | |||
30 | 50 | 0 | -6 | 0 | -6 | 6 | 5 | 3 | 5 | 4 | 5 | 2.5 | |||
50 | 80 | 0 | -7 | 0 | -7 | 7 | 5 | 3.5 | 5 | 4 | 5 | 3 | |||
80 | 120 | 0 | -8 | 0 | -8 | 8 | 6 | 4 | 6 | 5 | 6 | 4 | |||
120 | 150 | 0 | -9 | 0 | -9 | 9 | 7 | 5 | 7 | 5 | 7 | 5 | |||
Company brand | Product | Base oil | Usage range | Characteristics |
EXXON | Multemp SRL | Polyol ester+Diester | （-50，+150） | Excellent noise suppressantproperty and extended performance life |
Multemp PS | Diester+Refined mineral oil | （-50，+130） | Excellent low temperature performance,has outstanding noise suppressant property | |
Multemp SM-B | Synthetic hydrocarbon | （-50，+200） | Long service life under high temperature,Excellent low temperature performance,has high speed operation,low noise property | |
Multemp ET-K | Synthetic ether+Polyol ester | （-40≥，+200） | Has more extended life under high operating temperature condition | |
MOBILE | Polyrex EM | Mineral grease | （-40，+180） | Long life and high temperature |
Beacon325 | Synthetic grease | （-54，+150） | General purpose grease | |
Andok C | Channeling petroleum grease | （-27，+120） | Smooth running,long life with minimum migration | |
CHEVRON | Mobil 28(MIL-G-81322) | Synthetic hydrocarbon | （-54，+177） | Wide temperature range,good low temperature torque |
Mobil HP | Lithium complex | （-30，+110） | Vibration,moderate speed and good corrosion resistance | |
SHELL | SRI-2 | Mineral grease | （-30，+180） | High temperature range,good water resistance |
DUPONT | Alvania 2 | Mineral grease | （-35，+120） | Long life and high temperature |
RLQ #2 | Mineral grease | （-50，+150） | Low noise,high speed and high temperature | |
KLUBER | ASONIC | Synthetic hydrocarbon | （-50，+140） | High temperature stability with good lubricity properties |
JINZHI | HANGU 2# | Mineral grease | （-20，+120） | Low noise |
HTHS | Mineral grease | （-40，+180） | High speed,low temperature,low torque and low noise |
The radial clearance of bearings with electric motor quality
Bore | CM | ||||
Over | Including | Min | Max | ||
mm | inch | mm | inch | um | um |
10 | 0.3937 | 18 | 0.7087 | 4 | 11 |
18 | 0.7087 | 24 | 0.9449 | 5 | 12 |
24 | 0.9449 | 30 | 1.1811 | 5 | 12 |
30 | 1.1811 | 40 | 1.5748 | 9 | 17 |
40 | 1.5748 | 50 | 1.9685 | 9 | 17 |
50 | 1.9685 | 65 | 2.5591 | 12 | 22 |
Datas of the mini-deep groove bearings under no load as followed: | Tolerance in um | ||||||||||
Bore | Inch R Series | C2 | NORMAL | C3 | C4 | ||||||
Over | Including | ||||||||||
mm | inch | mm | inch | min | max | min | max | min | max | min | |
2.5 | 0.0984 | 10 | 0.3937 | R2-R6 | 0 | 7 | 2 | 13 | 8 | 23 | 14 |
10 | 0.3937 | 18 | 0.7087 | R8-R10 | 0 | 9 | 3 | 18 | 11 | 25 | 18 |
18 | 0.7087 | 24 | 0.9449 | R12-R14 | 0 | 10 | 5 | 20 | 13 | 58 | 20 |
24 | 0.9449 | 30 | 1.1811 | R16-18 | 1 | 11 | 5 | 20 | 13 | 28 | 23 |
30 | 1.1811 | 40 | 1.5748 | R20-R24 | 1 | 11 | 6 | 20 | 15 | 33 | 28 |
40 | 1.5748 | 50 | 1.9685 | 1 | 11 | 6 | 23 | 18 | 36 | 30 | |
50 | 1.9685 | 65 | 2.5591 | 1 | 12 | 8 | 28 | 23 | 43 | 38 | |
Datas of the mini-deep groove bearings under no load as followed: | Tolerance in um | |||||||||
Clearance Code | MC1 | MC2 | MC3 | MC4 | MC5 | |||||
Clearance | min | max | min | max | min | max | min | max | min | max |
1 | 6 | 4 | 9 | 6 | 11 | 9 | 14 | 15 | 22 | |
Tolerance data for vibration of single bearing
D | V | V1 | V2 | V3 | V4 | ||||||||||
mm | Low | Medium | High | Low | Medium | High | Low | Medium | High | Low | Medium | High | Low | Medium | High |
3,4 | 80 | 44 | 44 | 60 | 35 | 32 | 48 | 26 | 22 | 31 | 16 | 15 | 28 | 10 | 10 |
5,6 | 110 | 72 | 60 | 74 | 48 | 40 | 58 | 36 | 30 | 35 | 21 | 18 | 32 | 11 | 11 |
7,8,9 | 130 | 96 | 80 | 92 | 66 | 54 | 72 | 48 | 40 | 44 | 28 | 24 | 38 | 12 | 12 |
10,12 | 160 | 120 | 100 | 120 | 80 | 70 | 90 | 60 | 50 | 55 | 35 | 30 | 45 | 14 | 15 |
15 | 210 | 150 | 120 | 150 | 100 | 85 | 110 | 78 | 60 | 65 | 46 | 35 | 52 | 18 | 18 |
17 | 210 | 150 | 120 | 150 | 100 | 85 | 110 | 78 | 60 | 65 | 46 | 35 | 52 | 25 | 25 |
20 | 260 | 190 | 150 | 180 | 125 | 100 | 130 | 100 | 75 | 80 | 60 | 45 | 60 | 25 | 25 |
22,25 | 260 | 190 | 150 | 180 | 125 | 100 | 130 | 100 | 75 | 80 | 60 | 45 | 60 | 30 | 32 |
28 | 260 | 190 | 150 | 180 | 125 | 100 | 130 | 100 | 75 | 80 | 60 | 45 | 60 | 35 | 40 |
30,32 | 300 | 240 | 190 | 200 | 150 | 130 | 150 | 120 | 100 | 90 | 75 | 60 | 70 | 35 | 40 |
35 | 300 | 240 | 190 | 200 | 150 | 130 | 150 | 120 | 100 | 90 | 75 | 60 | 70 | 42 | 45 |
40 | 360 | 300 | 260 | 240 | 180 | 160 | 180 | 150 | 130 | 110 | 90 | 80 | 82 | 50 | 50 |
45 | 360 | 300 | 260 | 240 | 180 | 160 | 180 | 150 | 130 | 110 | 90 | 80 | 82 | 60 | 60 |
50 | 420 | 320 | 320 | 280 | 200 | 200 | 210 | 160 | 160 | 125 | 100 | 100 | 95 | 70 | 70 |
Maximum vibration acceleration of single bearing
D | Diameter Series(0) | Diameter Series(2) | Diameter Series(3) | |||||||||||
mm | Z | Z1 | Z2 | Z3 | Z | Z1 | Z2 | Z3 | Z4 | Z | Z1 | Z2 | Z3 | Z4 |
3 | 35 | 34 | 32 | 28 | 36 | 35 | 32 | 30 | - | 37 | 36 | 33 | 31 | - |
4 | 35 | 34 | 32 | 28 | 36 | 35 | 32 | 30 | - | 37 | 36 | 33 | 31 | - |
5 | 37 | 36 | 34 | 30 | 38 | 37 | 34 | 32 | - | 39 | 37 | 35 | 33 | - |
6 | 37 | 36 | 34 | 30 | 38 | 37 | 34 | 32 | - | 39 | 37 | 35 | 33 | - |
7 | 39 | 38 | 35 | 31 | 40 | 38 | 36 | 34 | - | - | - | - | - | - |
8 | 39 | 38 | 35 | 31 | 40 | 38 | 36 | 34 | - | - | - | - | - | - |
9 | 41 | 40 | 36 | 32 | 42 | 40 | 37 | 35 | - | - | - | - | - | - |
10 | 43 | 42 | 38 | 33 | 44 | 42 | 39 | 35 | 30 | 37 | 44 | 40 | 37 | 32 |
12 | 44 | 43 | 39 | 34 | 45 | 43 | 39 | 35 | 30 | 47 | 45 | 40 | 37 | 32 |
15 | 45 | 44 | 40 | 35 | 46 | 44 | 41 | 36 | 31 | 48 | 46 | 42 | 38 | 33 |
17 | 46 | 44 | 40 | 35 | 47 | 45 | 41 | 36 | 31 | 49 | 47 | 42 | 38 | 33 |
20 | 47 | 45 | 41 | 36 | 48 | 46 | 42 | 38 | 33 | 50 | 48 | 43 | 39 | 34 |
22 | 47 | 45 | 41 | 36 | 48 | 46 | 42 | 38 | 33 | 50 | 48 | 43 | 39 | 34 |
25 | 48 | 46 | 42 | 38 | 49 | 47 | 43 | 40 | 36 | 51 | 49 | 44 | 41 | 37 |
28 | 49 | 47 | 43 | 39 | 50 | 48 | 44 | 41 | 37 | 52 | 50 | 45 | 42 | 38 |
30 | 49 | 47 | 43 | 39 | 50 | 48 | 44 | 41 | 37 | 52 | 50 | 45 | 42 | 38 |
32 | 50 | 48 | 44 | 40 | 51 | 49 | 45 | 42 | 38 | 53 | 51 | 46 | 43 | 39 |
35 | 51 | 49 | 45 | 41 | 52 | 50 | 46 | 43 | 39 | 54 | 52 | 47 | 44 | 40 |
40 | 53 | 51 | 46 | 42 | 54 | 52 | 47 | 44 | 40 | 56 | 54 | 49 | 45 | 41 |
45 | 55 | 53 | 48 | 45 | 56 | 54 | 49 | 46 | 43 | 58 | 56 | 51 | 47 | 44 |
50 | 57 | 54 | 50 | 47 | 58 | 55 | 51 | 48 | 45 | 60 | 57 | 53 | 49 | 46 |
55 | 59 | 56 | 52 | 49 | 60 | 57 | 53 | 50 | 47 | 62 | 59 | 54 | 51 | 48 |
60 | 61 | 58 | 54 | 51 | 62 | 59 | 54 | 51 | 48 | 61 | 56 | 53 | 50 | |