SEBO Pulley 60 for the Duo Brush Machine

Whining from the drive side, paired with a brush that has lost its bite, points at the belt path long before it points at the motor. Part 3017 is the pulley SEBO calls Pulley 60, shown at position 71 on the Duo parts diagram, near the end of the numbered drive group between the left-hand bearing block assembly at 70, part 3052HG, and the Pulley 12 at 72, part 3056.

What wears is the contact surface. A polished or scored groove no longer holds the belt, so torque bleeds away as slip and the belt heats up and stretches to match. From the operator's side the machine sounds willing and behaves lazily: it spins freely off the carpet, then loses the brush the moment there is pile to work into. Fitting a fresh pulley returns a proper bite to the contact patch and stops the belt being consumed at a rate that makes no sense for its age. Slip of that kind also warms the whole drive group, so a pulley left too long tends to take the neighbouring bearings with it.

• Part number: 3017
• SEBO designation: Pulley 60
• Diagram position: 71 on the SEBO Duo parts diagram
• Fits: the SEBO Duo brush machine
• Sold: individually
• Related numbers: 3052HG bearing block assembly LH at 70, 3056 Pulley 12 at 72, 3038 drive belt 3 mm, 3042 drive belt 5 mm

The Duo carries several pulleys of similar appearance, so the designation is worth quoting alongside the number: Pulley 60 is 3017, Pulley 37 is 3018, Pulley 12 appears as both 3015 and 3056, and the motor pulley is 3014. Searching for a SEBO Duo pulley, a Duo belt pulley or part 3017 all lead to this one. Genuine SEBO pulley, dispatched by an authorized dealer in 2-5 business days.