What this part is:

McGill CL-25-15/16 two-bolt low-base pillow block ball bearing unit from the MB 25 standard-duty series. Bore 15/16 in (23.813 mm), size code 205. One-piece cast iron housing with elongated bolt slots, MB25-1516 insert bearing, spring locking with two concentric setscrews at 90°. Complete housed unit, 1 Pc.

Decoding the designation:

CL — pillow block with low backing height, the shorter base-to-shaft-centre casting.

25 — narrow inner ring, standard duty, spring locking.

15/16 — inch bore, 0.9375 in.

MB25-1516 — insert bearing with spherical outer surface, lube groove and anti-rotation pin.

Specifications:

Bore Diameter: 15/16 in (23.813 mm). Size Code: 205. Housing Material: Cast iron. Housing Style: Two-bolt pillow block, low backing height. Locking Method: Spring locking, two concentric setscrews at 90°. Rolling Elements: Ball. Dynamic Load Rating: 10,810 N (2,430 lbf). Static Load Rating: 7,830 N (1,760 lbf). Limiting Speed: 9,600 rpm with Type N seals; 11,400 rpm with flingers only; 6,800 rpm with Type E / E1 seals. Closure Type: Type N single-lip steel-clad contact seals with flingers. Operating Temperature: -40 to 225 °F. Relubrication: Relubricatable. Unit Quantity: 1 Pc.

Dimensions and mounting:

Two-bolt foot-mounted base with elongated bolt slots. Low backing height places the shaft centreline closer to the mounting surface than the standard C25 casting of the same bore. The spherical outer surface of the insert accommodates initial mounting misalignment; the anti-rotation pin holds the insert in the housing bore.

Compatibility and replacement:

AMI UCLP205 series, Dodge P2B-SCB series, INA RAKY series, Link-Belt PL3-U216N series, SKF SYH TF series and Timken YAK series are low-base two-bolt pillow blocks with wide inner rings. McGill C-25-15/16 is the same bearing in a taller standard-backing casting. McGill CL25K-15/16 uses a concentric collar in place of the spring locking setscrews. MB / McGill CL25 is out of the current Regal Rexnord ball bearing offering.

Frequently asked questions:

What bore does the McGill CL-25-15/16 have?

15/16 in (23.813 mm), size code 205.

How is it locked to the shaft?

Spring locking with two concentric setscrews at 90° in the narrow inner ring.

What does CL mean?

A pillow block with low backing height.