Couplings
Outer Size
Optional Inner Hole
RS-15
4/5/6 mm
RS-18
4/5/6/6.35/7/8 mm
RS-20
5/6/6.35/7/8/9/10 mm
RS-25
5/6/6.35/7/8/9/9.5/10/11/12/12.7 mm
RS-30
6/6.35/7/8/9/9.5/10/11/12/12.7/13/14/15 mm
RS-35
8/9/9.5/10/11/12/12.7/13/14/15/16/17/18/19 mm
1PCS D20 L25 RS Coupling
1. High-precision
2. High hardness

3. Wear-resisting

4. Easy disassembly and assembly
Model
D(mm)
L(mm)
L1
(mm)
M(mm)
Rated

(N*m)
Max

(N*m)
Max
Speed
(r/min)
Moment
of Inertia
(kg*m²)
Locking

(N*m)
RS-15
15
25
3.1
M3
0.3
1 8000
9.0x10^-7
0.7
RS-18
18
25
3.1
M3
0.3
1 8000
9.0x10^-7
0.7
RS-20
20
25
3.5
M4
1.2
2.4
6000
2.6x10^-6
1.5
RS-25
25
30
3.55
M4
1.6
3.2
6000
2.6x10^-6
1.7
RS-30
30
35
3.6
M5
4.2
8.4
5000
8.9x10^-6
1.7
RS-35
35
50
4.15
M5
9 18
4500
3.2x10^-5
3.8
RS-50
50
4500
9.8x10^-5

Model
Forming Hole Size
(mm)
Static Rigidity
(Nm)
Radial Deviation
(m.m)
Axial Deviation
(m.m)
Angular Deviation
(°)
Weight
(g)
dmin
dmax
RS-15
4 6 110
0.1
0.15
2 14
RS-18
4 8 110
0.1
0.15
2 14
RS-20
5 10
170
0.1
0.15
2 34
RS-25
5 12.7
170
0.1
0.15
2 40
RS-30
6 15
260
0.1
0.15
2 48
RS-35
8 19
330
0.1
0.15
2 96
RS-50
560
0.1
0.15
2 140