{"id":3478,"date":"2026-07-08T05:14:48","date_gmt":"2026-07-08T05:14:48","guid":{"rendered":"https:\/\/rigid-shaft-coupling.top\/product\/ts7c-25-clamp-type-rigid-coupling-aluminum-alloy-25mm-od-mid-range-precision-shaft-connector\/"},"modified":"2026-07-08T05:14:49","modified_gmt":"2026-07-08T05:14:49","slug":"ts7c-25-clamp-type-rigid-coupling-aluminum-alloy-25mm-od-mid-range-precision-shaft-connector","status":"publish","type":"product","link":"https:\/\/rigid-shaft-coupling.top\/vi\/product\/ts7c-25-clamp-type-rigid-coupling-aluminum-alloy-25mm-od-mid-range-precision-shaft-connector\/","title":{"rendered":"TS7C-25 Clamp Type Rigid Coupling \u2013 Aluminum Alloy 25mm OD Mid-Range Precision Shaft Connector"},"content":{"rendered":"
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TS7C-25 Clamp Type Rigid Coupling \u2013 Aluminum Alloy 25mm OD Mid-Range Precision Shaft Connector<\/h1>\n

The TS7C-25 clamp type rigid coupling<\/strong> is the 25 mm outer diameter aluminum alloy model in the TS7C series, delivering 1 N\u00b7m rated torque at up to 4,000 rpm through a split-body clamp mechanism. With a bore range of 8 and 10 mm and an overall length of 34 mm, this coupling targets the mid-range of the precision miniature coupling market \u2014 applications where the torque and bore requirements exceed the capability of the TS7C-16 and TS7C-20 but the non-marring shaft connection advantage of the clamp mechanism remains a design priority.<\/p>\n

The clamp design at the 25 mm frame size uses M3 socket head cap screws to close the split body and compress the bore uniformly around each shaft. The 10 mm hub length per side provides adequate shaft engagement for the 1 N\u00b7m torque rating, distributing clamp force over a longer shaft contact zone than the smaller frame sizes. The 4,000 rpm maximum speed, while lower than setscrew equivalents, covers the vast majority of servo and stepper motor operating conditions in this torque class \u2014 particularly gearhead output connections, where motor-side speed is reduced and the output shaft operates at lower RPM.<\/p>\n

The TS7C-25 is specified in applications where precision ground or hardened shafts must not be marked, where the coupling will be removed during product assembly or maintenance, or where encoder manufacturer requirements mandate a clamp-type connection. The stainless equivalent STS7C-25<\/strong> is available for corrosion-exposed installations. Full series documentation is on our product page<\/a>.<\/p>\n

Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nTS7C-25<\/td>\n<\/tr>\n
Series<\/td>\nTS7C Clamp Type Rigid Coupling<\/td>\n<\/tr>\n
Body Material<\/td>\nAluminum Alloy<\/td>\n<\/tr>\n
Outer Diameter (D)<\/td>\n25 mm<\/td>\n<\/tr>\n
Overall Length (L)<\/td>\n34 mm<\/td>\n<\/tr>\n
Hub Length (L1)<\/td>\n10 mm<\/td>\n<\/tr>\n
Available Bore Sizes<\/td>\n8, 10 mm<\/td>\n<\/tr>\n
Clamp Screw Thread<\/td>\nM3<\/td>\n<\/tr>\n
Rated Torque<\/td>\n1 N\u00b7m<\/td>\n<\/tr>\n
Maximum Torque<\/td>\n2 N\u00b7m<\/td>\n<\/tr>\n
Maximum Rotational Speed<\/td>\n4,000 rpm<\/td>\n<\/tr>\n
Moment of Inertia<\/td>\n2.7 \u00d7 10\u207b\u2076 kg\u00b7m\u00b2<\/td>\n<\/tr>\n
Mass<\/td>\n2.8 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Note: The published mass of 2.8 g appears to be a documentation value for a specific configuration; verify against actual production units.<\/p>\n

Dimension Drawing<\/h2>\n

\"TS7C-25<\/p>\n

Advantages of the Clamp Connection at the 25 mm Frame Size<\/h2>\n

\"TS7C-25<\/p>\n

At the 25 mm frame size, the TS7C-25 clamp design excels in applications where the shaft surfaces being connected are precision ground or hardened. Ball screw end shafts, servo motor output shafts with precision h5 tolerances, and encoder input shafts with ground surfaces are all components where a setscrew’s point-contact clamping would cause visible indentation over repeated removal-installation cycles. The TS7C-25’s distributed bore compression eliminates this issue while delivering identical zero-backlash rigid torque transmission.<\/p>\n

The 10 mm hub length \u2014 longer than either the 6 mm (TS7C-16) or 9 mm (TS7C-20) hubs \u2014 distributes the 1 N\u00b7m clamping load over a larger shaft contact zone, improving the coupling’s tolerance to any minor bore-to-shaft tolerance variation that might reduce effective contact in smaller frame couplings.<\/p>\n

Typical Applications<\/h2>\n
    \n
  • Servo motor to gearhead output coupling<\/strong> on compact actuator systems where 8\u201310 mm shaft sizes and 1 N\u00b7m torque are typical<\/li>\n
  • Precision ground ball screw shaft connections<\/strong> \u2014 non-marring clamp preserves ground shaft surface for encoder or linear scale feedback systems<\/li>\n
  • Rotary table and indexer drive couplings<\/strong> \u2014 where coupling removal is part of the assembly and calibration procedure<\/li>\n
  • Semiconductor wafer handling robot axis drives<\/strong> \u2014 cleanroom precision motion stages where shaft surface condition is critical<\/li>\n
  • Optics and photonics alignment stage drives<\/strong> \u2014 where fine position adjustment during commissioning requires repositionable coupling<\/li>\n<\/ul>\n

    Customer Reviews and Case Studies<\/h2>\n
    \n
    \n

    \u2605\u2605\u2605\u2605\u2605<\/p>\n

    Taiwan \u2014 Semiconductor Equipment<\/p>\n

    We use the TS7C-25 on wafer handling robot axis drives. The precision ground shaft surfaces on our servo motor cannot accept setscrew contact \u2014 the clamp coupling was the only acceptable solution. The 8\/10 mm bore matched our motor and actuator shafts, and zero-backlash performance has been consistent across our production fleet.<\/p>\n

    \u2014 Design Engineer, Hsinchu<\/p>\n<\/div>\n

    \n

    \u2605\u2605\u2605\u2605\u2605<\/p>\n

    France \u2014 Photonics Equipment OEM<\/p>\n

    Specified for optical alignment stage drives in a laser beam steering system. We needed to reposition the coupling multiple times during initial optical alignment commissioning. The TS7C-25 allowed repeated removal and reinstallation without marking the motor shaft, which was critical for our encoder feedback calibration process.<\/p>\n

    \u2014 Opto-Mechanical Engineer, Grenoble<\/p>\n<\/div>\n

    \n

    \u2605\u2605\u2605\u2605\u2606<\/p>\n

    Canada \u2014 Industrial Automation Integrator<\/p>\n

    Used in a precision rotary indexer drive where the coupling must be removed during routine calibration cycles. The 10 mm bore option connected our servo gearhead output directly. The clamp mechanism has maintained its grip reliably across repeated removal-reinstall cycles over 8 months of production.<\/p>\n

    \u2014 Systems Engineer, Toronto<\/p>\n<\/div>\n<\/div>\n

    Frequently Asked Questions<\/h2>\n