SAC Series

SAC Series

The SAC Series features four models of pre-assembled, solenoid actuated, wrap spring clutch packages. SAC units operate from a single AC or DC pulse to accurately start loads at speeds up to 1800 RPM, depending on size. Adjustable stop control collars provide easy and accurate output stop position settings. A typical SAC Series clutch will bring the load up to speed within 3 milliseconds. They are easy to interface with PCs and industrial control systems. SAC Series clutches are accurate, repeatable, fast acting, simple, maintenance free, and low cost.

Let Thomson Help You Make Your Selection!


PERFORMANCE SAC-2 SAC-4 SAC-5 SAC-6
Coil Voltage 12/24/90 VDC
115 VAC
12/24/90 VDC
115 VAC
12/24/90 VDC
115 VAC
12/24/90 VDC
115 VAC
Static Torque  Nm (lb-in) 2.825 (25) 13.56 (120) 28.25 (250) 56.5 (500)
Inertia (rotary)  kg-cm² (lb-in²) 0.062 (0.021) 0.188 (0.064) 0.571 (0.195) 5.034 (1.718)
Max Radial Bearing Load  kg (lbs) 3.4 (7.5)   6.35 (14.0)  14.52 (32.0) 28.58 (63.0)
Max Operating Speed  RPM  1800 1200 750 500
Response Time  (msec)
Voltage On @ full speed
20 24 27 45
Weight  kg (lbs) 0.45 (1) 0.91 (2) 1.36 (3) 3.18 (7)
Shaft Bores  mm (in) 6.35 (0.25) 9.525 (0.375) 12.7 (0.5) 19.05 (0.75), 25.40 (1.0)

SAC Series Highlights

  • Available in 4 sizes 
  • Solenoid actuated, wrap spring clutch package
  • 4 standard model sizes
  • Torque range from 25 lb. in. to 500 lb. in.
  • Hub input (shaft input available, consult factory)
  • 1, 2 and 4 stops standard—other stops available, up to 24 maximum