servo-axis hardware and medium compact machinery
EP-SCS18 is a single-split aluminum shaft clamp with a 18 mm nominal bore, 40 mm outside diameter, 12 mm width and M5 clamp screw. It is intended for axial positioning and stop duties on round shafts where a clamp-style collar gives the installer a removable, repositionable mechanical reference.
Where EP-SCS18 Fits Best
At 18 mm bore, the EP-SCS range moves to a 40 mm outside diameter while retaining 12 mm width and an M5 screw. This combination can fit servo-axis hardware, machine stops and other medium compact assemblies where a removable locator is useful.
EP-SCS18 is in the middle of the range and is a practical candidate for general automation, linear-motion hardware, fixture positioning and machine replacement work. The 40 mm outside diameter and 12 mm width should be treated as real interface dimensions, not secondary details after the 18 mm bore is chosen.
Model Dimensions
| Model | Bore d | OD D | Width B | Screw M | Split W | Keyway K |
|---|---|---|---|---|---|---|
| EP-SCS18 | 18 mm | 40 mm | 12 mm | M5 | 1.5 mm | 6 mm |
Selection starts with the measured shaft diameter, then moves to the surrounding envelope. Confirm the 40 mm outside diameter, 12 mm axial width and access to the M5 screw against the real assembly before treating EP-SCS18 as a replacement or new-build fit.
Interface Review
Check the 40 mm radial envelope around motor faces, bearing blocks and linear carriages. A correct bore does not prevent interference if the surrounding machine was designed around a slimmer collar style.
The EP-SCS chart lists K = 6 mm for the keyed option on EP-SCS18, while the standard collar is supplied without a keyway. A keyed request should include the mating key and shaft details because the K value is only one dimension of the complete interface.
Typical Positioning Roles
EP-SCS18 can serve as a removable stop on a 18 mm guide shaft, an axial reference beside another shaft-mounted component, or one side of a paired locating arrangement. Its 12 mm body width and 40 mm outside diameter must fit the surrounding mechanism; bearings, couplings, keys and other functional components should continue to perform the duties assigned to them by the machine design.
If EP-SCS18 is intended to act as a hard stop rather than a setup reference, describe the contact event in the enquiry. Repeated impact on a 18 mm shaft creates a different selection question from occasional positioning, even though the listed collar dimensions are unchanged.
Installation and Service Considerations
For a collar used beside a rotating component, confirm the adjacent part has its own correct retention and torque path. Treat the EP-SCS collar as a positioning element unless the application has been specifically reviewed for another duty.
When EP-SCS18 is used in automation or retrofit work, compare its 40 mm OD and 12 mm width with bearing blocks, couplings, guards and moving carriages. Orient the M5 screw toward a serviceable side so the 18 mm collar can be adjusted later without avoidable disassembly.
The EP-SCS18 body is tightened through its M5 clamp screw and the listed split W is 1.5 mm. Install it on a clean 18 mm shaft, seat the collar squarely, keep the screw accessible, and verify the axial position again after tightening before the mechanism returns to service.
Configuration Details to Confirm
The size chart defines the core geometry for EP-SCS18. If the application depends on a specific tightening torque, axial holding requirement, aluminum grade, surface treatment or compliance document, state that requirement in the RFQ so it can be confirmed for the ordered configuration rather than assumed from bore size alone.
When EP-SCS18 is being considered as a replacement, record the actual shaft diameter together with the old collar outside diameter, width and screw orientation. Also note nearby shoulders, bearing hardware and visible shaft condition so the 40 mm × 12 mm envelope can be checked against the installation rather than inferred from the machine name.
Nearest EP-SCS Bore Options
EP-SCS18 is centered on a 18 mm shaft interface. Nearby catalogue entries such as EP-SCS16 and EP-SCS20 are useful for comparing the range, but they should not be used to compensate for an uncertain shaft measurement. Verify the shaft first, then treat the 40 mm OD and 12 mm width as separate envelope checks.
RFQ Focus for EP-SCS18
Include shaft diameter, quantity, available radial space and any keyway requirement. The listed K value can guide the collar geometry, but the mating key still needs to be defined by the shaft design.
For EP-SCS18, identify whether the collar will be a fixed stop, adjustable setup reference, paired locator or keyed interface. Include that role with the 18 mm shaft dimension, quantity and any restricted 40 mm OD / 12 mm width envelope so the quotation addresses the real assembly.