UCP205 Bearing Specifications, Dimensions & Cross-Reference Guide
EP-UCP205 is a 25 mm bore pillow-block unit built around an EP-UC205 insert in a P205-style housing. It is a common reference size because the shaft is large enough to appear in conveyors and general machinery while the housing remains compact enough for straightforward handling.
A useful UCP205 specification page should separate three things: the housing dimensions, the insert-bearing rating data and the replacement checks. Mixing those categories is how incorrect torque or cross-reference assumptions enter an otherwise simple job.
EP-UCP205 key dimensions
| Parameter | EP-UCP205 value |
|---|---|
| Shaft bore d | 25 mm |
| Centre height H | 36.5 mm |
| Overall base length L | 140 mm |
| Mounting-hole spacing J | 105 mm |
| Housing width A | 38 mm |
| Mounting slot/diameter N | 13 mm |
| H1 | 15 mm |
| H0 | 69.5 mm |
| S | 14.3 mm |
| Insert width B | 34.1 mm |
| Housing mounting bolt | M10 |
| Insert | EP-UC205 |
| Housing | P205 |
| Approx. mass in supplied table | 0.72 kg |
Use the drawing with these values. The nominal bore identifies the shaft, while H, J and L tell you whether the complete unit sits in the same place on the machine.
Insert load ratings
The supplied EP-UC205 insert table lists a basic dynamic load rating of 10.8 kN and a basic static load rating of 7.88 kN. Those values should be used with the actual equivalent bearing load and speed; they are not the same thing as a maximum machine load for the complete assembly.
Set-screw torque for EP-UC205
For EP-UC205, the insert uses an M6 x 1 set screw with a maximum tightening torque of 3.9 N·m. The M10 value associated with the housing mounting bolt is not the set-screw size and must not be used as the inner-ring screw torque.
Inch-bore variant: UCP205-16
The same housing family is also listed with inch-oriented inserts. UCP205-16 identifies the 1-inch bore variant. One inch is 25.4 mm, so a 25 mm metric shaft and a 1-inch shaft are not interchangeable simply because the numbers look close. Specify the full suffix when the machine uses an inch shaft.
Cross-reference: use the model as a clue, not proof
A third-party model number can help identify the likely housing family, but the safe replacement workflow is dimensional. Compare bore, centre height, bolt spacing, base length, insert width, locking method and seal arrangement. Keep suffixes in the RFQ because they can describe details that the short family code does not capture.
| Cross-reference check | What to confirm on the installed unit |
|---|---|
| Shaft interface | 25 mm or 1-inch bore; straight shaft; locking method |
| Housing interface | H 36.5 mm; J 105 mm; L 140 mm; mounting hole geometry |
| Insert geometry | Width and spherical seat relationship |
| Service details | Seal, lubrication access, contamination and speed |
Installation and maintenance notes
Clean the shaft, position the housing without forcing it, allow paired supports to align before final clamping and tighten the insert screws to the correct UC205 value. The housing mounting bolts should follow the machine fastener specification. During service, monitor temperature, noise, grease condition and the security of the shaft lock rather than relying only on elapsed time.
EP-UCP205 as a replacement reference
EP-UCP205 is useful as a worked example because the model code is widely recognized, but the code should not replace measurement. Verify the 25 mm shaft, 36.5 mm centre height, 105 mm bolt spacing and the other dimensions in the current product table before approving the unit. If the old machine uses an inch shaft, a nominal “205” reference may point to a different bore variant; measure the shaft directly.
Metric versus inch variants
A 25 mm shaft is 0.4 mm smaller than a 1 inch shaft. That difference is large enough that the two should not be treated as interchangeable fits. When an inch-suffix model is supplied, include the full suffix and confirm the measured shaft. The housing may remain similar while the insert bore changes, which is exactly why the complete part number matters.
Cross-reference without overclaiming
SKF, FAG/Schaeffler, NSK, NTN, Timken, INA and JTEKT/Koyo numbers can be useful search inputs when a buyer is replacing an existing unit. However, a model name alone is not proof of exact equivalence. Compare bore, housing footprint, centre height, insert width, locking method and the application duty. Ask for engineering confirmation when any dimension or suffix differs.
On the UCP205 Bearing Specifications, Dimensions & Cross-Reference Guide page, third-party names are used only to identify an existing bearing, compare references or support product selection. All trademarks and brand names mentioned remain the property of their respective owners. Their appearance here does not imply affiliation, sponsorship, authorization or endorsement. Final replacement selection should be confirmed from dimensions, locking method and the actual machine interface.
Need a model checked against your machine? Send the dimensions with your RFQ.