Machine
Tools

Mechanical clutches create engagement shock that travels through spindle bearings, degrading positional accuracy and shortening bearing life. Hydraulic solutions add contamination risk.

PV Industries' single disc clutch engages the spindle on a 24V DC signal — smooth armature attraction, no torque spike, stationary field design with no slip rings. Mounts directly to IEC-standard motor flanges.

Every CNC machine with a vertical axis carries a load that falls under gravity when the servo loses power. A de-energised servo provides no guaranteed holding torque — a mechanically independent brake is mandatory.

Spring-applied safety brake holds the axis by spring force on power loss — zero power required. 24V DC releases for normal operation. Instantaneous re-engagement on E-stop, independent of servo drive.

A rotary indexing table must rotate to the next position quickly then lock rigidly while machining forces are applied. Insufficient holding torque causes the table to deflect under cutting forces — producing dimensional variation in the machined part.

Clutch-brake combination drives the index rotation with zero backlash, then simultaneously clamps the table shaft rigidly against machining loads — no pneumatic circuit, no separate clamp mechanism.

A multi-speed CNC headstock must shift between gear ratios for heavy roughing at low speed and finishing at high speed. Traditional gear selection requires operator intervention or complex pneumatic actuators.

Each gear ratio gets its own clutch. The CNC controller selects the required ratio by energising the coil — zero backlash, no pneumatic supply, IEC standard mounting, direct CNC panel interface.

A tool collision generates an instantaneous torque spike in milliseconds — far faster than any CNC control loop. Machine designers need a device that slips at a set torque threshold and re-engages automatically when the fault is cleared.

Clutch operating in slip mode at calibrated coil current provides set-point overload protection. Armature slips when torque exceeds threshold — absorbing collision energy before it reaches the gearbox. Re-engages automatically.

Detailed problem statements for Design Engineers and Purchase / Procurement Managers — specific to machine tool applications — will be added here as part of the next phase of content development.