CLM Motors

We offer the ARRI CLM-3 and CLM-4 motors. The CLM-3 is a very strong and fast lens motor. It is well suited for large-diameter zoom lenses or older, stiffer lenses that require more torque. It can also drive even heavy, difficult-to-operate lenses under extreme low temperature conditions. The CLM-4 is a very quiet lens motor that will smoothly drive any standard lens. The system offers various rod-to-rod mounting options, a Hill Bracket rosette, as well as the standard rod bracket for maximum flexibility on set.

Noteworthy Attributes:

  • Both CLMs have a modular concept which separates motor unit, gear, cable, and bracket to make handling and maintenance much easier. 
  • CLM-3 gear modules can attach on either side of the motor, providing more flexibility and various mounting options. The rod bracket can be mounted horizontally or vertically over a quick clamp shoe.

CLM-3 Motor

Gear Ratios0.8
# of Teeth60
Rod Standard5/8", 15mm, 19mm
UMC-4, SMC-1

CLM-4 Motor

# of Teeth50
Rod Standard15mm, 19mm
CompatibilityARRICAM, ARRI 416PLUS, ARRI 435 Extreme, UMC-4, SMC-1, ALEXA Plus/XT/SXT/Studio/65
Torque0.5 Nm (1Nm peak)
Maximum Speed100 teeth per second, 2 rotations per second

Click here for more information about the CLM-4 motor. 

Click here for more information about the CLM-3 motor.