Jaw Coupling vs Disc Coupling: Which Do You Need? A jaw coupling uses a replaceable elastomeric spider to absorb shock and handle minor misalignment, while a disc coupling uses a stack of thin metal discs to transmit torque with near-zero backlash and no wearing parts. Choose a jaw coupling for general-duty machinery where cost and […]
Category Archives: Coupling Guide
Coupling guide
How to Measure Coupling Bore Size Coupling bore size is the inside diameter of the coupling hub where your shaft inserts, and it needs to match your shaft diameter within the manufacturer’s stated tolerance — not just be “close enough.” Measure the shaft’s actual diameter with calipers at multiple points, not the coupling’s existing bore, […]
Understanding Coupling Misalignment: Angular, Parallel, and Axial Shaft misalignment comes in three forms — angular (shafts meet at an angle), parallel/offset (shafts run parallel but off-center), and axial (shafts move toward or away from each other along their centerline). Almost every real-world installation has some combination of all three, which is exactly why flexible couplings […]
How to Measure Coupling Bore Size (Without Guessing Wrong) Bore size is the diameter of the hole in a coupling hub that the shaft slides into — and it’s the single most common reason a coupling order gets returned. Measure your shaft with a digital caliper at the point where the coupling will sit, not […]