MB55X1, BK57-1, Transmission Pulley; 1" Bore; 1 Groove; 5.45" Outside Diameter; Finished Bore; 4L | A | 5L | B Belt Series; 4.7" Pitch Minimum; 5.1" Pitch Maximum; Keyway

MB55X1, BK57-1, Transmission Pulley; 1" Bore; 1 Groove; 5.45" Outside Diameter; Finished Bore; 4L | A | 5L | B Belt Series; 4.7" Pitch Minimum; 5.1" Pitch Maximum; Keyway

KEY FEATURES

• Model: MB55X1

• Noun: Pulley (Transmission Sheave)

• Belt Series: 4L | A | 5L | B

• Number of Grooves: 1

• Mounting Method: Finished Bore

• Bore Size: 1''

• Outside Diameter: 5.45''

• Pitch Diameter Range: 4.7'' – 5.1''

• Belt Width Range: 0.5'' – 0.656''

• Keyway: Yes

• Bushing Size: No Bushing (Fixed Bore)

• Construction: Cast Iron (Fixed Pitch – Arm Style)

• Weight: 2.5 lbs (1.202 kg)

• Units: Inch

• Application: Medium-duty power transmission

• Groove Profile: Compatible with 4L, A, 5L, and B belts