The questions below cover practical EP-SCS selection, installation and replacement decisions. They are intended to help buyers define the interface clearly before requesting a quotation, especially where bore size alone does not describe the full machine fit.
What is a shaft clamp?
A clamp-style shaft collar tightens around a round shaft through a split and clamp screw. It can be used as an axial stop, a setup reference or a locating element when the machine design provides the required clearance and duty conditions.
How is a clamp collar different from a set screw collar?
A clamp collar closes around the shaft, while a set screw collar relies on a screw pressing directly against one point on the shaft surface. The two styles can have different body envelopes and service behavior, so replacement selection should compare more than bore size.
Which bore sizes are available in the EP-SCS series?
The listed EP-SCS bores are 6, 8, 10, 12, 13, 14, 15, 16, 18, 20, 22, 25, 30, 35, 40, 45, 50 and 60 mm. Open the Products page to compare the outside diameter, body width, screw and keyway data for each model.
How do I choose the right size?
Measure the shaft at the intended collar position and choose the matching nominal bore as the starting point. Then confirm outside diameter, width, screw access and any keyway interface against the actual machine envelope.
Are keyways standard?
The standard collar is plain-bore. The EP-SCS chart lists K dimensions for most models from EP-SCS10 upward; a keyed request should also include the mating key and shaft dimensions so the complete interface can be checked.
What tightening torque should I use?
Use the tightening requirement confirmed for the ordered configuration and application. Do not transfer a value from an unrelated collar solely because the screw thread is the same, particularly when axial holding or repeated impact is important.
Can the collar be repositioned?
Yes, the split-clamp format can be loosened and reset when the application calls for an adjustable axial reference. Stop and secure the machine first, loosen the collar sufficiently to avoid dragging it on the shaft, and inspect the contact surfaces before retightening.
Can I use one collar as a guide-shaft end stop?
A collar can serve as a guide-shaft stop when the machine layout and duty are appropriate. Check the full carriage travel, the contact condition at the stop and the available radial/axial clearance so the collar does not create an unintended interference or impact condition.
Can two collars be used around another component?
Two collars can establish an adjustable axial location window around another shaft-mounted part. Define the required clearance and make sure the located component still has the bearing, torque-transmission or support functions required by the machine design.
Can I request a non-standard bore?
If none of the listed bores matches the required shaft, send the target bore, shaft tolerance, quantity and a drawing for feasibility review. A non-standard request should be defined from the actual interface rather than by modifying a standard model name.
Can EP-SCS replace another shaft collar directly?
Do not assume direct interchangeability from nominal bore alone. Compare the old part’s outside diameter, width, screw position, keyway and surrounding machine clearance before choosing a replacement.
What should an RFQ include?
Send the preferred model or bore, quantity, measured shaft diameter, keyway requirement, application and any envelope restriction. For replacement work, include a photo or drawing and note shaft wear, nearby bearings, guards, couplings or moving parts that may control the fit.
Need a Model or Fit Check?
Email [email protected] or use the enquiry form with the shaft diameter, application and any drawing or photo that shows the available space. If a specific performance or documentation requirement matters, include it in the same request so it can be addressed for the ordered configuration.