Description
TS7C-32 Clamp Type Rigid Coupling – Aluminum Alloy 32mm OD Heavy-Duty Split-Body Precision Coupler
The TS7C-32 clamp type rigid coupling is the largest and highest-torque model in the TS7C aluminum alloy clamp series, rated at 2 N·m nominal torque and 3,600 rpm maximum speed. With a 32 mm outer diameter, an overall length of 41 mm, and bore options of 10 and 14 mm, it serves medium-frame servo motor and gearhead output connections where the non-marring, distributed-clamp shaft grip of the TS7C design is required at higher torque levels. The M4 clamp screw thread — upgraded from M3 in the smaller TS7C frames — provides the clamping force necessary for reliable 2 N·m torque transmission without shaft surface marking.
The TS7C-32 is distinguished from the TS7-32 setscrew equivalent primarily by its shaft interaction: where the setscrew applies focused point-contact force, the TS7C-32 compresses the bore uniformly around the full shaft circumference. This makes it the correct choice for applications where the connected shafts have precision-ground surfaces, hardened surfaces, or surface finish specifications that prohibit setscrew contact. At 50 g, the TS7C-32 is substantially lighter than its stainless equivalent (STS7C-32 at 158 g) and appropriate for most indoor dry or protected environments.
At 3,600 rpm maximum speed, the TS7C-32 is suited to gearbox output shaft connections, rotary table drives, and servo motor connections where operating speed is within this limit. For applications requiring higher speed on larger shafts, the TS7-32 setscrew model at 10,000 rpm is the alternative. A full comparison is available on our product catalog.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | TS7C-32 |
| Series | TS7C Clamp Type Rigid Coupling |
| Body Material | Aluminum Alloy |
| Outer Diameter (D) | 32 mm |
| Overall Length (L) | 41 mm |
| Hub Length (L1) | 12 mm |
| Available Bore Sizes | 10, 14 mm |
| Clamp Screw Thread | M4 |
| Rated Torque | 2 N·m |
| Maximum Torque | 4 N·m |
| Maximum Rotational Speed | 3,600 rpm |
| Moment of Inertia | 9.4 × 10⁻⁶ kg·m² |
| Mass | 50 g |
Dimension Drawing
M4 Clamp Screw and Extended Hub Length
The upgrade to M4 clamp screws at the 32 mm frame reflects the proportionally higher clamping force required for reliable 2 N·m torque transmission. M4 screws provide approximately 1.78× the clamping load of M3 screws under the same hex key operation, ensuring the bore closes tightly and uniformly around the shaft across the full 12 mm hub engagement length. The 12 mm hub length — the longest in the TS7C aluminum series — distributes this clamping force over a larger shaft surface area, reducing bore-to-shaft contact pressure and improving the coupling’s long-term reliability under sustained and reversing torque loads.
For the TS7C-32, the alternate incremental tightening installation sequence is particularly important. Fully tightening one clamp screw before the other can cause the split body halves to close unevenly, resulting in an oval bore cross-section that reduces effective shaft contact area and grip. Tighten in quarter-turn increments, alternating between the two clamp screws, until the specified tightening torque is reached on both.
Typical Applications
- Servo gearhead output shaft coupling — where output shaft diameter of 10–14 mm and speed below 3,600 rpm matches the coupling’s operating range
- Rotary table index drive couplings — low-speed, higher-torque indexing applications with precision ground drive shafts
- Precision grinding machine encoder connections — where workhead spindle encoder shaft surface must not be marked
- Medical imaging equipment axis drives — CT gantry positioning and MRI table drives at low rotational speed
- Laboratory centrifuge drive shaft couplings — where shaft removal for maintenance must not affect shaft surface condition
Customer Reviews and Case Studies
★★★★★
Germany — Grinding Machine OEM
We use the TS7C-32 on workhead spindle encoder shaft connections. The precision ground encoder shaft surface must not be contacted by a setscrew — the TS7C-32 clamp is the specified solution. Zero-backlash performance has been confirmed across our production fleet, and the M4 clamp screws have maintained their tightening torque through our full machine service intervals.
— Engineering Manager, Ulm
★★★★★
United Kingdom — Medical Device OEM
Installed in CT scanner positioning drives where shaft surface integrity is a regulatory requirement for ongoing device certification. The TS7C-32 clamp allows encoder removal and reinstallation during scheduled maintenance without shaft surface damage. Dimensional consistency between batches has been reliable.
— Design Engineer, Cambridge
★★★★☆
Netherlands — Laboratory Equipment Manufacturer
Used in centrifuge drive shaft couplings requiring removal during rotor maintenance. The 14 mm bore matched our drive shaft and the clamp mechanism has held through repeated removal-reinstall cycles. The non-marring connection was the decisive factor over the setscrew version for our application.
— Product Engineer, Delft
Frequently Asked Questions
What bore sizes are available for the TS7C-32?
The TS7C-32 accepts bore sizes of 10 and 14 mm. Both same-bore (10/10 or 14/14) and mixed-bore (10/14) configurations are available at standard pricing.
Is 3,600 rpm sufficient for most servo motor applications?
The TS7C-32 maximum speed of 3,600 rpm covers direct-drive connections where servo motor operating speed is at or below this level — common in many packaging machine, rotary table, and gearhead output drive applications. For servo motor direct connections at higher rated speeds, the setscrew TS7-32 (10,000 rpm) is the appropriate choice.
Why does the TS7C-32 use M4 clamp screws?
The larger M4 clamp screw at the 32 mm frame size provides greater clamping force to support the 2 N·m rated torque — approximately 1.78 times the clamp force available from M3 screws under the same tightening torque. This ensures reliable shaft grip at the higher torque level of this frame size.
Can the TS7C-32 replace the TS7-32 setscrew model in an existing installation?
The TS7C-32 is dimensionally similar to the TS7-32 but the outer profile differs due to the clamp screw heads and body slot. Confirm dimensional compatibility with your installation envelope before substituting. Bore range also differs slightly: TS7C-32 offers 10 and 14 mm; TS7-32 offers 12, 14, 15, and 16 mm.
How does the hub length of the TS7C-32 compare to smaller TS7C models?
The TS7C-32 hub length is 12 mm per side, the longest in the TS7C aluminum series. This extended hub provides greater shaft engagement length to support the higher torque rating, reducing the surface pressure between bore and shaft for a given applied torque.
Get a Quote for the TS7C-32 Clamp Rigid Coupling
Ever Power manufactures the TS7C-32 and the complete TS7C clamp series from our factory. Provide bore sizes, quantity, and application for a prompt technical confirmation and factory-direct pricing.