It is an integral-structured metal coupling with a spiral slit in the round material. A perfect integrated construction eliminates backlash. The A and DS models with high-strength aluminum alloy and 3000 model (1441 model) with stainless steel are available. The A model and 3000 (1441) models are single-slit models with high flexibility of maximum angular misalignment 5 deg.. And the DS model is a double-slit model with high torsional rigidity. Two fastening methods can be selected for each model, the set screw method and clamp method.
HELI-CAL A Model
It is an integral-structured metal coupling with a single spiral slit in the round material. A perfect integrated construction eliminates backlash. Maximum parallel offset 0.25mm and maximum angular misalignment 5deg. are allowed. The high-strength aluminum alloy material and alumite treated surface ensure a high-corrosion resistance. Two fastening methods can be selected, the set screw method (ARM model) and clamp method (ACRM model).
| Normal torque | 0.3Nm to 2.3Nm |
| Drilled bores | 2mm to 12mm |
| Backlash | Zero |
HELI-CAL 3000(1441) Model
It is an integral-structured metal coupling with a single spiral slit in the round material. A perfect integrated construction eliminates backlash. Maximum parallel offset 0.25mm and maximum angular misalignment 5deg. are allowed. Due to the stainless steel material, it can be used in any environment. Two fastening methods can be selected, the set screw method (3002M and 1441 models) and clamp method (3005M model).
| Normal torque | 0.4Nm to 2.5Nm |
| Drilled bores | 2mm to 12mm |
| Backlash | Zero |
HELI-CAL DS Model
It is an integral-structured metal coupling with two spiral slits in the round material. It has a higher torsional rigidity compared with the HELI-CAL A model with single spiral slit. A perfect integral construction eliminates backlash. Maximum parallel offset 0.15mm and maximum angular misalignment 3deg. are allowed. The high-strength aluminum alloy material and alumite treated surface ensure a high-corrosion resistance. Two fastening methods can be selected, the set screw method (DSR model) and clamp method (DSCR model).
| Normal torque | 0.8Nm to 19.5Nm |
| Drilled bores | 4mm to 16mm |
| Backlash | Zero |
