SNRUCFL.2062-Bolt Oval Flange Ball Bearing Unit, 30 mm Bore, Setscrew Locking, Self-Aligning, Cast Iron

Product Description

What this part is

NTN-SNR UCFL.206 mounted ball bearing unit. Brand: SNR (NTN-SNR). Manufacturer Part Number: UCFL.206. Base Number: UCFL206. Housing Style: oval two-bolt flange, cast iron, JIS pattern. Bore / Shaft Size: 30 mm. Bore Type: straight. Bearing Type: mounted ball bearing unit with an extended inner ring insert. Number of Rows: 1. Rolling Elements: balls. Locking Method: set screws in the extended inner ring, 1/4-28 UNF. Closure Type: double rubber seal. Housing Material: cast iron. Internal Clearance: CN. Design Units: Metric. Unit Quantity: 1 Pc. GTIN: 3413529508556.

Published ratings and mounting data

Dynamic Load Rating: 19.5 kN (4 383 lbf). Static Load Rating: 11.2 kN (2 517 lbf). Fatigue Load Limit Pu: 0.475 kN. Limiting Speed: 5 000 rpm. Bolt Centre To Centre (J): 117 mm. Overall Length: 148 mm. Overall Height (H): 147.5 mm. Overall Width (T): 40.2 mm. Inner Ring Width (B): 38.1 mm. Top External Diameter (Db1): 80 mm. Bolt Hole Size (N): 16 mm, for M14 fasteners. Number Of Bolt Holes: 2. Grease fitting: 1/4-28 UNF. Item Weight: 0.94 kg (2.07 lb). Operating Temperature Range: −20 °C to 120 °C. Precision Rating: ABEC 1 / P0.

Decoding the designation

UC: insert ball bearing with an extended inner ring and setscrew locking. FL: oval, two-bolt flange housing. 206: the 206 bearing envelope, giving a 30 mm bore. UCFL206 is a JIS-standard pattern, so the housing dimensions above are common across makers.

What these specs mean in practice

Bolt centres of 117 mm and an overall width of 40.2 mm are the two dimensions that decide whether the unit drops into an existing frame. The 147.5 mm overall height is a flange face dimension; on a flange unit the shaft line is set by the mounting hole position rather than by the housing.

Setscrew locking is rated by the maker for constant or alternating direction of rotation, which makes it the choice for reversing drives. The insert seats spherically in the housing and takes up moderate initial misalignment, so the unit serves as a locating position with the opposite shaft end carrying thermal growth.

Double rubber seals hold grease in and dirt out, and the 1/4-28 UNF fitting keeps the unit relubricatable in place.

Quantity and configuration

Unit Quantity: 1 Pc. One complete unit: cast iron flange housing with the insert and setscrews fitted.

Interchange guidance

UCFL206 is a JIS pattern, so it interchanges dimensionally with UCFL206 units from NTN, FYH, Koyo, Timken and SKF (Y/UCFL 206, FY 30 FL) at 30 mm bore. The same insert in a different housing gives the UCP206 pillow block, the UCF206 and UCFU206 four-bolt square flanges and the UCFC206 round piloted flange, all related builds on a different footprint. UEL and JEL inserts of the same envelope lock with a collar in place of setscrews. Searchable variants of this number are UCFL.206, UCFL206, UCFL-206, UCFL 206, UCFL206-30 and Y/UCFL 206. SNR is now NTN-SNR.