Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Festo
This Festo industrial component, part number 3637971, features a nominal length of 44 mm, a mass moment of inertia of 5.87 kgmm², and a transferable torque of 6.5 Nm with a maximum rotational speed of 8000 rpm. Designed with an actuator interface code of S38 and a motor input interface code of 40A, the unit weighs 270 g, maintains an IP40 degree of protection, and conforms to VDMA24364-B2-L LABS (PWIS) requirements. It operates within an ambient temperature range of -10 °C to 60 °C, tolerates storage temperatures from -25 °C to 60 °C and relative air humidity up to 95%, features RoHS-compliant materials, and supports any mounting position. Submit the exact part number, quantity, and application requirements to receive a formal quote.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 3637971. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.