UC214 Bearing Dimensions

UC214 compared with nearby sizes and housings

UC214 is a set-screw insert for a 70 mm shaft: outside diameter 125 mm, inner ring width 74.6 mm and outer ring width 30 mm.

UC213 is the next smaller size in the same series on this site: shaft d 65 mm (5 mm less), outside diameter D 120 mm (5 mm less) and inner ring width B 65.1 mm (9.5 mm less).

Dimensions in mm from the model pages; weight from FULI's catalog, — = not listed on this site.

UC214 weight, load ratings and speed

FULI's catalog gives about 2.05 kg for the insert, so 100 pieces of UC214 weigh about 205 kg before packing.

The catalog lists UC214 with a dynamic load rating of 62.0 kN and a static load rating of 44.0 kN. Its speed limits depend on the shaft tolerance: 2,200 rpm on a js7 or j7 shaft and 1,600 rpm on an h7 shaft. A closer shaft fit holds the inner ring more evenly, which is why the js7 / j7 figure is higher.

Values from FULI's catalog; confirm for your application.

UC214 dimensions in inches

The nearest common inch shaft size to the 70 mm bore of UC214 is 2-3/4 in (69.85 mm), 0.15 mm smaller than the bore, so UC214 would be loose on it. An inch shaft needs an inch bore insert. Inch bore versions are made for some sizes; ask us with the shaft size.

Converted at 1 in = 25.4 mm and rounded to four decimals. The bearing itself is made to the millimetre sizes.

Mounting UC214 (general guidance)

General guidance, not a FULI specification: insert bearings slide onto the shaft rather than being pressed on, and are held by their locking device. A shaft ground or drawn to h7 is common; a closer shaft such as js7 or j7 suits higher speed. For UC214 the catalog gives 2,200 and 1,600 rpm for the two cases.

UC214 is locked by set screws in the extended inner ring. Housed-unit problems usually start at the set screws: if the inner ring is not held, it turns on the shaft and wears it. Tighten each screw to the torque in the mounting instructions, and check them again after the first hours of running.

The spherical outside diameter of UC214 lets the insert swivel in the housing seat while it is being mounted, which takes up small errors in shaft line. It does not make the bearing a self-aligning bearing in service.

Grease for UC214

The insert is sealed on both sides and greased at the factory. Fitted in a housing with a grease fitting, it can be relubricated through the housing; on its own it runs on the factory fill.

Greases for a stated temperature range can be specified on the order; for North America a range of −40 to 120 °C is often asked for.

How FULI supplies UC214

FULI supplies UC214 on its own as a replacement insert, or fitted in a housing as a complete unit. The rings and balls are GCr15 chrome steel and the radial clearance is C0 as standard, with C3 on request.

Rings are marked with a brand you are authorised to use, with the FULI brand, or left neutral, as your order states. The box is printed with the model, precision class and brand.

Inquiries that leave out the prefix or suffix letters are the usual cause of a wrong quote, so write the full designation, for example UC214.

Tools and guides for UC214

• Insert bearing sizes: UC, SB and SA
• Pillow block bearing sizes
• Flange bearing sizes
• Pillow block bearing cross reference
• Bearing lubrication basics
• All bearing products and model pages