Flexible Metric Bellow Coupling Bkl 40X51mm M5
GR40X51 M5 Shaft Coupling Aluminum Bellows Setscrew For CNC Machine
Product introduction
The elastic element of bellows coupling is precision metal bellows, which is divided into flexible series and rigid series. The flexible series has great elasticity and is often used in micro occasions such as encoders and sensors. The rigid series is mainly used in servo motors, CNC machine tools (machining centers) and other occasions.
Products Features
1. The bellows coupling has no clearance and high sensitivity
2. High elasticity, better protection of equipment
3. It can absorb vibration and compensate radial, angular and axial deviations at the same time
4. Oil stain resistance and strong corrosion resistance
5. Torsional rigidity, clockwise and counterclockwise rotation characteristics are exactly the same
6. Commonly used in CNC machine tools, indexing discs and other industrial machinery
Products Parameters
Product Drawings
Product Dimensions
| model parameter | common bore diameter d1,d2 | ΦD | L | LI | L2 | L3 | N | F | M | tightening screw torque (N.M) |
| GR-16x27 | 4,5,6,6.35,7,8 | 16 | 27 | 7.5 | 2 | 8 | 13.5 | 3 | M3 | 0.7 |
| GR-20x32 | 5,6,6.35,7,8,9,9.525,10,11,12 | 20 | 32 | 7.2 | 2.8 | 12 | 18 | 3.5 | M3 | 0.7 |
| GR-22.5x34 | 5,6,6.35,7,8,9,9.525,10,11,12 | 22.5 | 34 | 8.05 | 2.8 | 12.3 | 20.2 | 4.5 | M4 | 1.7 |
| GR-25x37 | 6,6.35,7,8,9,9.525,10,11,12 | 25 | 37 | 9.5 | 3 | 12 | 20.2 | 4.5 | M4 | 1.7 |
| GR-32x42 | 8,9,10,11,12,12.7,14,15 | 32 | 42 | 8 | 4 | 18 | 27.2 | 5.5 | M5 | 4 |
| GR-40x51 | 8,9,9.525,10,11,12,12.7,14,15,16,17,18,19,20 | 40 | 51 | 9.5 | 6 | 20 | 34.5 | 5.5 | M5 | 4 |
| GR-55x57 | 10,11,12,12.7,14,15,16,17,18,19,20,22,24,25 | 55 | 57 | 9 | 6 | 27 | 51.9 | 6.25 | M6 | 7 |
| GR-65x81 | 10,11,12,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32,35,38 | 65 | 81 | 19.5 | 7 | 28 | 60.5 | 8.9 | M6 | 7 |
| model parameter | Rated torque (N.M)* |
allowable eccentricity (mm)* |
allowable deflection angle (°)* |
allowable axial deviation (mm)* |
maximum speed rpm |
static torsional stiffness (N.M/rad) |
moment of inertia (Kg.M2) |
Material of shaft sleeve | surface treatment | weight (g) |
| GR-16x27 | 0.8 | 0.1 | 2 | + 0.4 -1.2 | 20000 | 150 | 7.9x10-7 | High strength aluminum alloy | Anodizing treatment | 8 |
| GR-20x32 | 1.5 | 0.1 | 2 | + 0.6 -1.8 | 18000 | 220 | 2.0x10-6 | 13 | ||
| GR-22.5x34 | 1.8 | 0.15 | 2 | + 0.6 -1.8 | 16000 | 300 | 6.2x10-6 | 22 | ||
| GR-25x37 | 2.0 | 0.15 | 2 | + 0.6 -1.8 | 15000 | 330 | 6.7x10-6 | 30 | ||
| GR-32x42 | 2.5 | 0.2 | 2 | + 0.8 -2.5 | 11000 | 490 | 2.0x10-5 | 53 | ||
| GR-40x51 | 6.4 | 0.3 | 2 | + 0.8 -2.5 | 10000 | 530 | 2.1x10-5 | 85 | ||
| GR-55x57 | 12 | 0.3 | 2 | + 0.8 -2.5 | 9000 | 860 | 2.8x10-5 | 170 | ||
| GR-65x81 | 18 | 0.2 | 2 | + 0.7 -2.5 | 4500 | 900 | 2.3x10-5 | 280 |
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