Tamiya 70121 Pulley Unit Set

Tamiya 70121 Pulley Unit Set

A great introduction to the pulley, the Pulley Unit Set is similar in function to a gear box. Five pulleys in all are included in the set along with a universal arm and pulley mounts. A motor and motor mount box are also included. Combine this set with other Tamiya Construction and Robotics products and let your imagination run wild.

One 50 mm-diameter pulley
One 30 mm-diameter pulley
One 25 mm-diameter pulley
One 20 mm-diameter pulley
Three 11 mm-diameter pulleys
Two single and two double 2 mm hexagonal bushings
Two single and two double 3 mm hexagonal bushings
Two single and two double 3.1 mm round bushings (allow pulleys to idle on 3 mm hexagonal and round shafts)
Two single and two double 2.9 mm round bushings (allow pulleys to rotate with 3 mm round shafts)
Two single and four double 2.1 mm round bushings (allow pulleys to idle on 2 mm round shafts)
Four single and two double 1.9 mm round bushings (allow pulleys to rotate with 2 mm round shafts)
Power bands
One belt guide
One base
Two pulley mounts
One motor mount box
Five 3 x 18 mm screws
Three 3 x 18 mm tapping screws
Six 3 x 8 mm screws
Six 3 x 8 mm tapping screws
Eight 3 mm nuts
Four 3 mm plastic nuts
Two metal rivets

One motor

Operating voltage: 1.5-3V
No-load speed at 3V: about 12,300 RPM
Stall current at 3V: about 2.10A
Stall torque at 3V: about 36g-cm