UCT206 Bearing Dimensions

UCT206 compared with nearby sizes and housings

UCT206 is a take-up unit that holds the UC206 insert on a 30 mm shaft: dimension H 102 mm, dimension L 113 mm, dimension L1 70 mm and dimension N2 37 mm.

The same 206 size is also made as UCP206 (pillow block unit, d 30 · H 42.9 · J 121 mm), UCF206 (square flange unit, d 30 · L 108 · J 83 mm) and UCFL206 (oval flange unit, d 30 · L 148 · J 117 mm). All of them take the same UC206 insert, so a worn insert can be changed without changing the housing type.

UCT210 is the next larger size in the same series on this site: shaft d 50 mm (20 mm more), inner ring width B 51.6 mm (13.5 mm more), dimension H 117 mm (15 mm more) and dimension L 149 mm (36 mm more).

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

UCT206 weight, load ratings and speed

FULI's catalog gives about 1.3 kg for the complete unit, housing and insert together, so 100 pieces of UCT206 weigh about 130 kg before packing.

The catalog lists UCT206 with a dynamic load rating of 19.5 kN and a static load rating of 11.3 kN. Its speed limits depend on the shaft tolerance: 4,700 rpm on a js7 or j7 shaft and 3,400 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.

UCT206 dimensions in inches

The nearest common inch shaft size to the 30 mm bore of UCT206 is 1-3/16 in (30.16 mm), 0.16 mm larger than the bore, so UCT206 will not go 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 UCT206 (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 UCT206 the catalog gives 4,700 and 3,400 rpm for the two cases.

The UC206 insert in UCT206 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 housing of UCT206 slides in the guides of the frame. Set the belt or chain tension with the adjusting screw first, then lock the insert to the shaft.

Grease for UCT206

The insert in UCT206 is sealed on both sides and greased at the factory. If the housing has a grease fitting, add grease slowly through it while the shaft turns until a little fresh grease shows at the seals; general practice is to relubricate more often in wet or dusty places.

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 UCT206

FULI supplies UCT206 as a complete unit, or the UC206 insert on its own for replacement. Before packing, the factory checks the mounting torque, the fit of the insert in the housing, the radial clearance and that the base-to-centre height is consistent across the batch.

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 UCT206.

Tools and guides for UCT206

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