• Use collars as they are received.
• Wipe the bore clean.
• Apply a thin coat of light oil to the shaft.
• Place collar in desired location on shaft and tighten the collar until a slight resistance is felt.
• On two-piece collars be sure to maintain the gap between the two halves of the collar during installation.
• Wring collar into final position and tighten screws to the full recommended seating torque.

Rigid Couplings

• Align the coupling on the two shafts to be connected.
• Tighten the Nypatch® clamp screws in two stages. Starting with the inside screws, tighten to half of the recommended seating torque. Repeat for the outside screws, again tightening to half of the recommended seating torque.
• Be sure to maintain the gap between the two halves of the coupling on two-piece styles.
• Tighten screws to the full recommended seating torque following the same pattern, beginning with the inside screws first.

Beam Couplings

• Align both hubs of the coupling on the shafts that are to be joined.
• Fully tighten the screws on one hub to their recommended seating torque using an unplated wrench.
• Before tightening the screws on the second hub, rotate the coupling by hand to allow it to reach its free length.
• Tighten the second hub on the shaft such that the misalignment angle remains centered along the length of the coupling and the coupling remains axially relaxed.
• On relief bore couplings, the shafts may be extended to the centerline of the coupling without affecting coupling performance.

Disc Couplings

• Assure that the misalignment between shafts is within the coupling's ratings.
• Align both hubs of the coupling on the shafts that are to be joined.
• Fully tighten the screw(s) on one hub to their recommended seating torque.
• Before tightening the screw(s) on the second hub, rotate the coupling by hand to allow it to reach its free length.
• Tighten the hub on the second shaft such that the misalignment angle remains centered along the length of the coupling and the coupling remains axially relaxed.

Jaw Couplings

• Assure that the misalignment between shafts is within the coupling's ratings.
• Slide a hub onto each shaft to be joined with the drive tenons facing each other.
• Fully tighten the screw(s) on the first hub to the recommended seating torque.
• Insert a spider into the jaws of one hub until the raised points contact the base of the hub.
• Insert the jaws of the second hub into the spider openings until the raised points contact the base of the second hub. Some force will be required to insert the second hub. This is normal.
• Assure that a gap is maintained between the two hubs so there is no metal to metal contact. Fully tighten the screw(s) on the second hub to the recommended seating torque.

Oldham Couplings

• Assure that the misalignment between shafts is within the coupling's ratings.
• Slide a hub onto each shaft to be joined with the drive tenons facing each other.
• Rotate the hubs on the shaft so the drive tenons are located 90° from each other.
• Place a torque disk so one groove fits over the drive tenons of a hub and center the disk by hand.
• Insert a shim with the thickness of the coupling's axial motion rating into the groove of the torque disk.
• Slide the tenons of the second hub into the mating groove in the disk until it touches the shim stock.
• Fully tighten the screw(s) on each hub to their recommended seating torque .
• Remove the shim stock to leave a small gap between the top of the drive tenons and the torque disk to allow for axial movement.

Bellows Couplings

• Assure that the misalignment between shafts is within the coupling's ratings.
• Align both hubs of the coupling on the shafts that are to be joined.
• Fully tighten the screw(s) on one hub to their recommended seating torque.
• Before tightening the screw(s) on the second hub, rotate the coupling by hand to allow it to reach its free length.
• Tighten the hub on the second shaft such that the misalignment angle remains centered along the length of the coupling and the coupling remains axially relaxed.

Clamping Devices

• Thoroughly clean the shaft and hub surfaces.
• Apply a thin coat of light oil on the shaft and hub surfaces.
• Slide the clamping device onto the shaft and into the hub.
• Use a torque wrench with an unplated drive key to gradually tighten all screws in several stages in the pattern shown in the diagram (# of screws may vary) below. Repeat the pattern until reaching the recommended seating torque.
• Never use an oil with molybdenum disulfide or other substances that dramatically reduce friction coefficient.