GR
GR semi-rigid couplings are used to transfer, with the highest precision, rotary movement between two non-aligned shafts.
- Excellent compensation of misalignments without free play.
- Dampening of vibrations and shocks.
• Terminals made of stainless steel AISI 303, available models (☛see section "Accessories"):
| - cylindrical solid CL | - cylindrical female CF |
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| - cylindrical male CM | - 2 piece cylindrical male CMB |
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Photogallery
| SEMI-RIGID COUPLINGS <GR> |
| * for the GR model the length of the flexibel shaft is 10mm (fixed) |
| DIMENSION TABLE | |
| VERSION | FLEXIBLE SHAFT |
| Ø A | |
| GR6 | 6 |
| GR8 | 8 |
| GR10 | 10 |
| GR12 | 12 |
| GR15 | 15 |
| GR20 | 20 |
FIXING TERMINALS
made of stainless steel AISI 303, available models:
| Q = square |
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| FLEXIBLE SHAFT | EXTERNAL SQUARE | TOTAL LENGTH |
| Ø A | Ø B | C |
| 6 | 5 | 30 |
| 8 | 6.5 | 35 |
| 10 | 8.5 | 40 |
| 12 | 10 | 40 |
| 15 | 13 | 45 |
| 20 | 17.5 | 45 |
| CL = cylindrical solid |
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| FLEXIBLE SHAFT | EXTERNAL DIAMETER | TOTAL LENGTH | AVAILABLE LENGTH |
| Ø A | Ø B | C | D |
| 6 | 10 | 28 | 12 |
| 8 | 12 | 38 | 16 |
| 10 | 14 | 44 | 20 |
| 12 | 16 | 48 | 22 |
| 15 | 20 | 50 | 25 |
| 20 | 25 | 57 | 30 |
| CF = cylindrical female |
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| FLEXIBLE SHAFT | EXTERNAL DIAMETER | TOTAL LENGTH | BORE DEPTH | KEYWAY | BORE |
| Ø A | Ø B | C | D | E | Ø F |
| 6 | 10 | 28 | 10 | = | 6 |
| 8 | 12 | 38 | 15 | = | 8 |
| 10 | 14 | 44 | 15 | = | 8 |
| 12 | 16 | 48 | 16 | 3 | 10 |
| 15 | 20 | 50 | 16 | 3 | 10 |
| 20 | 25 | 57 | 20 | 5 | 14 |
| CM = cylindrical male |
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| FLEXIBLE SHAFT | EXTERNAL DIAMETER | TOTAL LENGHT | AVAILABLE LENGTH | KEYWAY | MALE DIAMETER |
| Ø A | Ø B | C | D | E | Ø F |
| 6 | 10 | 28 | 10 | = | 6 |
| 8 | 12 | 38 | 14 | = | 8 |
| 10 | 14 | 44 | 14 | = | 8 |
| 12 | 16 | 48 | 15 | 3 | 10 |
| 15 | 20 | 50 | 15 | 3 | 10 |
| 15 | 20 | 50 | 15 | 5 | 14* |
| 20 | 25 | 57 | 20 | 5 | 14 |
* optional
| CMB = 2 piece connection bushing |
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| FLEXIBLE SHAFT | EXTERNAL DIAMETER | TOTAL LENGHT | AVAILABLE LENGTH | KEYWAY | BORE | EXTERNAL BUSHING |
| Ø A | Ø B | C | D | E | Ø F | Ø G |
| 6 | 10 | 28 | 10 | = | 6 | 14 |
| 8 | 12 | 38 | 14 | = | 8 | 22 |
| 10 | 14 | 44 | 14 | = | 8 | 22 |
| 12 | 16 | 48 | 15 | 3 | 10 | 24 |
| 15 | 20 | 50 | 15 | 3 | 10 | 24 |
| 15 | 20 | 50 | 15 | 5 | 14* | 32* |
| 20 | 25 | 57 | 20 | 5 | 14 | 32 |
* optional
2 pieces connection bushings with screws to couple gearboxes and shafts.
• Available shafts Ø6, Ø8, Ø10, Ø14, Ø20.
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AVAILABLE VERSIONS S2 = albero Ø6 S4 = albero Ø8 S5 = albero Ø10 
S6 = albero Ø14 S8 = albero Ø20 
Flanged supports with extension shaft for coupling with position indicators.
| AVAILABLE VERSIONS | |
| S2 FL OP2 | S4 FL OP3 |
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| S5 FL OP3 | S5 FL OP7/EP7 |
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Richiedi l'accesso
| EFFICIENCY TABLE | ||||
| VERSION | TORSION | MIN. BENDING RADIUS | TORQUE | WEIGHT |
| (°) | mm | Nm | gr | |
| GR6 | 80 | 70 | 3 | 25 |
| GR8 | 70 | 90 | 4.5 | 50 |
| GR10 | 70 | 130 | 7.5 | 80 |
| GR12 | 50 | 160 | 9 | 110 |
| GR15 | 28 | 300 | 12 | 170 |
| GR20 | 18 | 400 |
18.5 |
270 |
| FLEXIBILITY AND BENDING RADIUS |
Flexibility and minimum bending radius are important factors especially if the shaft is exposed to severe bending during its use.
☛ It is necessary to make sure that the lowest bending radius applied to the transmission is greater than its minimum radius of curvature. If during use the shaft reaches a bending radius which is below the minimum bending radius, the unit can be crushed, or deformed or excessivley stressed, and thus reduce its strength and / or durability or even cause it to fail.
Up to this radius it is possible to bend the transmission during operation without damaging or excessive reduction in its lifetime.
| BENDING RADIUS |
| WORKING ANGLE |
| MISALIGNEMENT |
| FLEXIBILITY AND BENDING RADIUS | ||||
| Ø | B | MBR | AR | AM |
| FLEXIBLE SHAFT | LENGTH OF FLEXIBLE SHAFT* mm | BENDING RADIUS mm | WORKING ANGLE (°) | MISALIGNEMENT mm |
| 6 | 10 | 70 | 4.09 | 0.36 |
| 10 | 10 | 130 | 2.20 | 0.20 |
| 15 | 10 | 300 | 0.95 | 0.08 |
| 20 | 10 | 400 | 0.72 | 0.06 |
| * for the GR model the length of the flexibel shaft is 10mm (fixed) |
| EFFICIENCY TABLE |
| MAX. TORQUE / ANGLE | |||
| Ø | B | T | φ |
| FLEXIBLE SHAFT Ø | LENGTH OF FLEXIBLE SHAFT* mm | MAX. WORKING TORQUE Nm | ROTATION ANGLE (°) |
| 6 | 10 | 3.0 | 0.79 |
| 10 | 10 | 7.5 | 0.74 |
| 15 | 10 | 12.5 | 0.30 |
| 20 | 10 | 18.5 | 0.17 |
| MAX. TORQUE ANGLE with discording winding | |||
| Ø | B | T | φ |
| FLEXIBLE SHAFT Ø | LENGTH OF FLEXIBLE SHAFT* mm | MAX. WORKING TORQUE Nm | ROTATION ANGLE (°) with discording winding |
| 6 | 10 | 3.0 | 0.79 |
| 10 | 10 | 7.5 | 0.74 |
| 15 | 10 | 12.5 | 0.30 |
| 20 | 10 | 18.5 | 0.17 |
| * for the GR model the length of the flexibel shaft is 10mm (fixed) |
