UNIVERSAL RETROFIT DRIVE FITS ANY FREESTANDING JIB CRANE WITH A BOX STYLE HEAD Spanco Retrofit Jib Drives feature a modular design that bolts onto the back of any box style head assembly, even those not manufactured by Spanco. Our jib drive features a high-efficiency electric motor and ultra-reliable worm gear reducer. The worm gear drives a set of large steel rollers fitted with polyurethane treads for exceptional durability and traction on the crane’s mast. The rollers are constantly kept at the correct pressure against the mast via a spring-loaded tension adjustment mechanism, assuring smooth operation. Jib Drive Control Panel: Includes mainline contactor, reversing magnetic contactors, thermal overload, 110V fused control transformer, branch circuit fusing to crane motor, and solid state “soft start” control adjustable for time and torque—all in a NEMA 3R enclosure.

Model	Capacity	Jib Span	Speed, Nominal
RDU-2	2 Ton	20′	1/2 RPM
RDU-3	3 Ton	20′	1/2 RPM
RDU-5	5 Ton	20′	1/2 RPM

The Spanco Retrofit Jib Drive is recommended for indoor applications only.

The power drive kit includes: Two drives with drive wheels and sprockets; chains; two gear reducers; two single-speed, 230/460V, three-phase, TEFC motors; solid state, adjustable “soft start”; and two idler assemblies. Standard travel speed is 50 FPM.

• V-Groove Track Drives: Two motors drive rigid steel V-groove wheels along a fixed path
• Guide Angle Drives: Ideal for installations where the gantry runs along a wall, two motors drive polyurethane wheels that are guided on one side by a guide angle (locally sourced). The guide angle lags into the floor, typically at the base of a wall. The kit includes guide rollers on one drive and one idler assembly. Both drives and idlers come with polyurethane bumpers.
• Truly Trackless (Aligning) Drives: Ideal when you need to keep your shop floor clear of any tracks or angle guides, a selector switch on the control pendant selectively turns each motor on and off to guide the gantry along