Single-row deep groove ball bearings (inner diameter 10–160 mm) cater to a wide range of applications, from micro-motors to medium-sized industrial gearboxes, and represent the core of the brand’s precision manufacturing technology. This series utilises high-purity bearing steel and NSK’s Japanese grinding processes to ensure P5/P6 precision whilst minimising friction torque, making it particularly suitable for high-speed operation. The optimised deep-groove raceway design enables the bearings to withstand both radial and bidirectional axial loads. Combined with low-noise cages and high-quality grease, operating noise is significantly lower than industry standards. From small shaft diameters of 10 mm to heavy-duty spindles of 160 mm, every bearing undergoes 100% vibration and clearance testing to ensure smooth, quiet and long-lasting operation in CNC machine tools, industrial fans, agricultural machinery and automated equipment.
| Dimensions (mm) | Rated load (KN) | Rated load {kgf} | Coef. | Rated speed (min)-1 Grease lubrication | Rated speed (min)-1 Oil lubrication | Bearing Designation | Dimensions of the Retaining Ring Groove(1) (mm) | Stop Ring Dimensions (mm) | Stop Ring Dimensions(1) (mm) | Install Dimensions (mm) | Weight (kg) | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | B | γ(Minimum) | Cr | Cor | Cr | Cor | f0 | Open-type Z·ZZ-type V· VV Type | Open-type DU Type DDU Type | Open-type Z-type | Open-type | Dust cover | Contactless Seal type | Contact seal type | With automatic ring groove | with a retaining ring | a (Maximum) | b (Minimum) | D1 (Maximum) | γo (Maximum) | γN (Minimum) | D2 (Maximum) | f | Da (Minimum） | da (Maximum） | Da (Maximum) | γa (Maximum) | Dx (Minimum) | CY (Maximum) | (reference) |
| 55 | 80 | 13 | 1 | 16 | 13.3 | 1630 | 1350 | 16.2 | 8000 | 4500 | 9500 | 6911 | ZZ | VV | DDU | N | NR | 2.1 | 1.3 | 77.9 | 0.4 | 0.5 | 84.4 | 1.12 | 60 | 61.5 | 75 | 1 | 86 | 2.9 | 0.189 |
| 55 | 72 | 9 | 0.3 | 8.8 | 8.5 | 900 | 865 | 17.0 | 8500 | 4800 | 10000 | 6811 | ZZ | VV | DDU | N | NR | 1.7 | 0.95 | 70.7 | 0.25 | 0.3 | 74.8 | 0.85 | 57 | 59 | 70 | 0.3 | 76 | 2.3 | 0.081 |
| 50 | 110 | 27 | 2 | 65 | 38.5 | 6650 | 3900 | 13.2 | 7100 | 4300 | 8500 | *6310& | ZZ | VV | DDU | N | NR | 3.28 | 2.7 | 106.81 | 0.6 | 0.5 | 116.6 | 2.46 | 59 | 68 | 101 | 2 | 118 | 5.4 | 1.06 |
| 50 | 90 | 20 | 1.1 | 37 | 23.2 | 3750 | 2370 | 14.4 | 8500 | 4800 | 10000 | *6210& | ZZ | VV | DDU | N | NR | 3.28 | 2.7 | 86.79 | 0.6 | 0.5 | 96.5 | 2.46 | 56.5 | 60 | 83.5 | 1 | 98 | 5.4 | 0.459 |
| 50 | 80 | 16 | 1 | 22.9 | 16.6 | 2330 | 1700 | 15.6 | 9500 | 4800 | 11000 | *6010& | ZZ | VV | DDU | N | NR | 2.49 | 1.9 | 76.81 | 0.6 | 0.5 | 86.6 | 1.7 | 55 | 58.5 | 75 | 1 | 88 | 3.8 | 0.261 |
| 50 | 80 | 10 | 0.6 | 15.4 | 12.4 | 1570 | 1260 | 16.1 | 8500 | — | 10000 | 16010 | — | — | — | — | — | — | — | — | — | — | — | — | 54 | — | 76 | 0.6 | — | — | 0.175 |
| 50 | 72 | 12 | 0.6 | 14.5 | 11.7 | 1480 | 1200 | 16.1 | 9000 | 5300 | 11000 | 6910 | ZZ | VV | DDU | N | NR | 1.7 | 0.95 | 70.7 | 0.25 | 0.5 | 74.8 | 0.85 | 54 | 55 | 68 | 0.6 | 76 | 2.3 | 0.135 |
| 50 | 65 | 7 | 0.3 | 6.4 | 6.2 | 655 | 635 | 17.2 | 9500 | 5300 | 11000 | 6810 | ZZ | VV | DDU | N | NR | 1.3 | 0.95 | 63.7 | 0.25 | 0.3 | 67.8 | 0.85 | 52 | 52.5 | 63 | 0.3 | 68.51.8 | 0.050 | |
| 45 | 100 | 25 | 1.5 | 55.5 | 32 | 5650 | 3250 | 13.1 | 8000 | 4800 | 9500 | *6309& | ZZ | VV | DDU | N | NR | 3.28 | 2.7 | 96.8 | 0.6 | 0.5 | 106.5 | 2.46 | 53 | 61.5 | 92 | 1.5 | 108 | 5.4 | 0.829 |
| 45 | 85 | 19 | 1.1 | 33 | 20.4 | 3350 | 2080 | 14.4 | 9000 | 5300 | 11000 | *6209& | ZZ | VV | DDU | N | NR | 3.28 | 1.9 | 81.81 | 0.6 | 0.5 | 91.6 | 1.7 | 51.5 | 55.5 | 78.5 | 1 | 93 | 4.6 | 0.42 |
| 45 | 75 | 16 | 1 | 22 | 15.2 | 2240 | 1550 | 15.3 | 10000 | 5300 | 12000 | *6009& | ZZ | VV | DDU | N | NR | 2.49 | 1.9 | 71.83 | 0.6 | 0.5 | 81.6 | 1.7 | 50 | 53.5 | 70 | 1 | 83 | 3.8 | 0.241 |
| 45 | 75 | 10 | 0.6 | 14.9 | 11.4 | 1520 | 1160 | 15.9 | 9000 | — | 11000 | 16009 | — | — | — | — | — | — | — | — | — | — | — | — | 49 | — | 71 | 0.6 | — | — | 0.167 |
| 45 | 68 | 12 | 0.6 | 14.1 | 10.9 | 1440 | 1110 | 15.9 | 9500 | 5600 | 12000 | 6909 | ZZ | VV | DDU | N | NR | 1.7 | 0.95 | 66.7 | 0.25 | 0.5 | 70.8 | 0.85 | 49 | 50 | 64 | 0.6 | 72 | 2.3 | 0.126 |
| 45 | 58 | 7 | 0.3 | 6.6 | 6.15 | 670 | 625 | 17.2 | 11000 | 6000 | 13000 | 6809 | ZZ | VV | DD | N | NR | 1.3 | 0.95 | 56.7 | 0.25 | 0.3 | 60.8 | 0.85 | 47 | 47.5 | 56 | 0.3 | 61.51.8 | 0.038 | |
| 40 | 90 | 23 | 1.5 | 43 | 24 | 4350 | 2450 | 13.2 | 9000 | 5300 | 11000 | *6308& | ZZ | VV | DDU | N | NR | 3.28 | 2.7 | 86.79 | 0.6 | 0.5 | 96.5 | 2.46 | 48 | 53 | 82 | 1.5 | 98 | 5.4 | 0.636 |
| 40 | 80 | 18 | 1.1 | 30.5 | 17.9 | 3100 | 1820 | 14.0 | 9500 | 5600 | 12000 | *6208& | ZZ | VV | DDU | N | NR | 3.28 | 1.9 | 76.81 | 0.6 | 0.5 | 86.6 | 1.7 | 46.5 | 50.5 | 73.5 | 1 | 88 | 4.6 | 0.366 |
| 40 | 68 | 15 | 1 | 17.6 | 11.5 | 1790 | 1180 | 15.3 | 12000 | 6000 | 14000 | *6008& | ZZ | VV | DDU | N | NR | 2.49 | 1.9 | 64.82 | 0.6 | 0.5 | 74.6 | 1.7 | 45 | 47.5 | 63 | 1 | 76 | 3.8 | 0.19 |
| 40 | 68 | 9 | 0.3 | 12.6 | 9.65 | 1290 | 985 | 16.0 | 10000 | — | 12000 | 16008 | — | — | — | — | — | — | — | — | — | — | — | — | 42 | — | 66 | 0.3 | — | — | 0.13 |
| 40 | 62 | 12 | 0.6 | 13.7 | 10 | 1390 | 1020 | 15.7 | 11000 | 6300 | 13000 | 6908 | ZZ | VV | DDU | N | NR | 1.7 | 0.95 | 60.7 | 0.25 | 0.5 | 64.8 | 0.85 | 44 | 46 | 58 | 0.6 | 65.5 | 2.3 | 0.112 |
| 40 | 52 | 7 | 0.3 | 6.35 | 5.55 | 650 | 565 | 17.0 | 12000 | 6700 | 14000 | 6808 | ZZ | VV | DD | N | NR | 1.3 | 0.95 | 50.7 | 0.25 | 0.3 | 54.8 | 0.85 | 42 | 42 | 50 | 0.3 | 55.5 | 1.8 | 0.031 |
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