61702 ZZ 6702 ZZ Deep Groove Ball Bearings15mm X 21mm X 4mm Thin Section Robot Bearings
The 6702 ZZ deep groove ball bearing, with dimensions of 15 mm inner diameter × 21mm outer diameter × 4mm width, is renowned for its compact size, high-speed capability, and low noise characteristics.
Bearing Number |
Boundary Dimensions(mm) |
Basic Load Rating(N) |
Limiting Speed(rpm) |
Reference(kg)
Weight |
| Inner Diameter |
Outer Diameter |
Width |
Chamfer |
Dynamic |
Static |
Grease |
Oil |
| d |
D |
B |
B1 |
r(min) |
Cr |
Cor |
Non-contact |
Wt ≈ |
| 61700 |
ZZ |
|
10 |
15 |
3 |
4 |
0.1 |
800 |
390 |
34000 |
40000 |
0.00190 |
| 61701 |
ZZ |
2RS |
12 |
18 |
4 |
4 |
0.2 |
910 |
530 |
32000 |
38000 |
0.00310 |
| 61702 |
ZZ |
2RS |
15 |
21 |
4 |
4 |
0.2 |
850 |
490 |
28000 |
32000 |
0.00360 |
| 61703 |
ZZ |
2RS |
17 |
23 |
4 |
4 |
0.2 |
960 |
610 |
26000 |
30000 |
0.00400 |
| 61704 |
ZZ |
2RS |
20 |
27 |
4 |
4 |
0.2 |
1030 |
720 |
23000 |
28000 |
0.00590 |
| 61705 |
ZZ |
2RS |
25 |
32 |
4 |
4 |
0.2 |
1090 |
830 |
19000 |
23000 |
0.00700 |
| 61706 |
ZZ |
2RS |
30 |
37 |
4 |
4 |
0.2 |
1170 |
980 |
16000 |
19000 |
0.00830 |
| 61707 |
ZZ |
2RS |
35 |
44 |
5 |
5 |
0.3 |
1850 |
1630 |
14000 |
17000 |
0.01500 |
| 61708 |
ZZ |
2RS |
40 |
50 |
6 |
6 |
0.3 |
2519 |
2234 |
12000 |
15000 |
0.02300 |
| 61709 |
ZZ |
2RS |
45 |
55 |
6 |
6 |
0.3 |
2577 |
2401 |
9000 |
13000 |
0.02500 |
| 61710 |
ZZ |
2RS |
50 |
62 |
6 |
6 |
0.3 |
2666 |
2636 |
7000 |
10000 |
0.03400 |
| 61711 |
ZZ |
2RS |
55 |
68 |
7 |
7 |
0.3 |
2880 |
3070 |
5000 |
8000 |
0.05500 |
6702 ZZ Ball Bearings 15X21X4mm Specifications & Dimensions
| Universal |
6702 ZZ |
| Type |
Deep Groove Ball |
| Inner/Outer Ring/ Ball Material |
Chrome Steel |
| Cage Material |
Steel |
| CageType |
Punching |
| Precision |
P0,P6 |
| Inner Dimension d(Ø)(mm) |
15 |
| Outer Dimension D(Ø)(mm) |
21 |
| Width B (or T)(mm) |
4 |
| Lubrication |
Grease |
| Load Direction |
Radial |
| Specifications/Environment |
Standard |
| Number of Raceway Ring Rows |
Single Track |
| Size Standards |
Metric Series |
The 61702 2RS thin-section deep groove ball bearing is renowned for its high precision, low noise, and double-sided sealing (dust and contaminant protection), making it suitable for a wide range of applications:
1.Electronics, Appliances, and Smart Home Devices:
Hair Curlers: Its heat resistance and thin design make it ideal for the internal precision transmission mechanisms of hair curlers.
Smart Locks: The low noise and high precision features are well-suited for the rotating components in smart locks.
Oscillating Fans/Blowers: Used in motor-driven parts to ensure smooth operation.
2. Small Machinery and Precision Equipment:
Model Aircraft and Toys: The thin design saves space, making it suitable for micro aerial vehicles or toy motors.
Robot Joints: High-speed capability and durability meet the precise transmission needs of robotic joints.
Gearboxes and Instruments: Utilized in precision transmission systems and instrument measurement components.
3. Industrial and Special Environments:
Motors and Mechanical Equipment: Made from bearing steel (GCr15), it supports long-term loads in industrial motors and automation equipment.
4. Other Applications:
Medical Devices: Low noise levels and dust-proof design make it appropriate for use in precision medical instruments (as extended applications by some manufacturers).
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15mm bore 61702 2RS Sealed Deep Groove Ball Bearing 15x21x4mm Thin Section Robot Bearing 6702 2RS single ball bearing roller Images
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