Bearing Inserts
UC318-308 Insert Bearing
3-1/2 inch (88.9 mm) shaft
UC318-308 is an insert bearing in the UC3 series for a 3-1/2 inch (88.9 mm) shaft. It is a ball bearing with a spherical outer ring and set screw locking, supplied without a housing. Key dimensions: D 190 mm, B 96 mm, C 49 mm, rs 3 mm, S 40 mm, S1 56 mm.
Brands: NTN, FAG, SKF, FYH, Asahi, DTC, SLS
UC318-308 Specifications
| Shaft Dia. | 3-1/2 in (88.9 mm) |
|---|---|
| Bearing Number | UC318-308 |
| D (Outside Dia.) | 190 mm |
| B (Inner Ring Width) | 96 mm |
| C (Outer Ring Width) | 49 mm |
| rs (min. Chamfer) | 3 mm |
| S | 40 mm |
| S1 | 56 mm |
| G | 16 mm |
| ds (Set Screw) | 5/8-18UNF |
| d4 | 120.9 mm |
| Ca | 12.2 mm |
| Cr (Dynamic Load) | 143000 N |
| Cor (Static Load) | 107000 N |
| f0 (Factor) | 13.3 |
| Mass | 7.6 kg |
| Locking | Set screw |
| Series | UC300 Series Insert Bearings (UC3) |
Dimensions and load ratings per the NTN catalogue (metric and inch bores). The catalogue number adds suffixes to the base number shown here; confirm the exact version and brand with us before ordering. Cr and Cor are basic dynamic and static load ratings in newtons.
Other Insert Bearings for a 3-1/2 inch (88.9 mm) Shaft
| Bearing Number | Type | Locking |
|---|---|---|
| UC218-308 | Bearing Inserts | Set screw |
| UCX18-308 | Bearing Inserts | Set screw |
| UEL318-308 | Bearing Inserts | Eccentric locking collar |
Neighbouring Sizes in the UC3 Series
UC318-308 — Frequently Asked Questions
What shaft size does the UC318-308 fit?
The UC318-308 fits a 3-1/2 inch (88.9 mm) shaft.
What is the UC318-308 made of and how is it locked to the shaft?
It is supplied as an insert bearing only, without a housing, and is locked to the shaft with set screw. Its outer ring is spherical so it seats in a matching housing.
Do you supply the UC318-308 across India?
Yes. Logass Trade Centre supplies the UC318-308 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and preferred brand.
Can’t find your size?
We supply sizes, brands and special versions of mounted bearing units that are not listed on this page. Type the exact size or designation you need and send it to us for a quote.
Need pricing on the UC318-308?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.