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Mountable shaft collars with face holes are designed to mate directly with components such as sprockets, pulleys, and metallic plates. Ruland manufactures them with drilled holes for mounting flexibility or threaded holes for the most secure connection between the collar and mated component. They are offered in steel, aluminum, and 303 stainless steel in bore sizes ranging from 3/8” to 2” and 10mm to 50mm.
Clamp style universal joints improve over set screw style because they do not mar the shaft, offer infinite adjustability, and can be used on all shaft types. Ruland is the only North American supplier of clamp style universal joints and manufactures the clamp feature, bores, and keyways in our advanced manufacturing facility in Marlborough, MA USA. They are available in sizes from 1/4" to 1 1/4” in steel for high strength and stainless steel for corrosion resistance.
Quick clamp shaft collars are pre-set at the factory for a specific shaft size.
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 close the cam lever by hand. Resistance should be felt on the cam as it closes.
In the event the collar is loose on the shaft, or no/minimal cam lever resistance exists, it is likely that the shaft itself is undersized. Follow the below procedure to re-set the collar adjustment.
Open the cam lever and place the collar on the shaft at the desired location.
Turn the tensioning screw clockwise by a fractional amount (less than 1/8-turn).
Close the cam lever completely observing increased resistance as it is closed.
Repeat tensioning screw adjustment until desired performance is achieved.
CAUTION - Do not over-tighten the set screw as the cam may lock in the closed position or damage to the cam mechanism may occur.
In the event the cam lever encounters excessive resistance due to the shaft being oversized, follow the noted re-adjustment steps turning the tensioning screw counter-clockwise in this case.
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.
Align both hubs of the coupling on the shafts that are to be joined and determine if the misalignment parameters are within the limits of the coupling.
Using an appropriate torque wrench, tighten the screw(s) of one hub down to the recommended seating torque.
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.
The shaft(s) may extend into the relieved portion of the bore as long as it does not exceed the shaft penetration length specified under the coupling’s parameters.
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.
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.
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.
Align the bores of the Controlflex coupling hubs on the shafts that are to be joined and determine if the misalignment parameters are within the limits of the coupling. (Select Hub for misalignment parameters.)
Rotate the hubs on the shaft so the drive pins are 90° from each other.
Place one hub at the end of the shaft. Tighten the clamp screw to the recommended seating torque.
Place an insert(s) with the standoffs facing the hub over the pins of the hub that was just installed.
Align the drive pins on the second hub to match the holes in the insert(s).
Verify the space between hubs (See table below).
Tighten the clamp screw on the second hub to the recommended seating torque using torque wrench with a hex bit.
One Frog
Inch OD
Metric OD
Space between Hubs
0.748 in
19 mm
0.190 in (4.8 mm)
0.984 in
25 mm
0.255 in (6.5 mm)
1.457 in
37mm
0.393 in (10.0 mm)
2.205 in
56 mm
0.590 in (15.0 mm)
2.953 in
75 mm
0.826 in (21.0 mm)
Two Frogs
Inch OD
Metric OD
Space between Hubs
0.748 in
19 mm
0.347 in (8.8 mm)
0.984 in
25 mm
0.472in (12.0 mm)
1.457 in
37mm
0.708 in (18.0 mm)
2.205 in
56 mm
1.062 in (27.0 mm)
2.953 in
75 mm
1.456 in (37.0 mm)
Slit Couplings
Align both hubs of the coupling on the shafts that are to be joined and determine if the misalignment parameters are within the limits of the coupling.
Using an appropriate torque wrench, tighten the screw(s) of one hub down to the 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.
The shaft(s) may extend into the relieved portion of the bore as long as it does not exceed the shaft penetration length specified under the coupling’s parameters.