SealMasterCylindrical Cartridge Mounted Bearing Unit – 1-3/16 in Shaft, Setscrew Locking, Cast Iron Housing

Product Description

What this part is: SealMaster SC-19 mounted ball bearing unit. Bearing type: Mounted ball bearing, cylindrical cartridge. Bore / Shaft Size: 1-3/16 in (1.1875 in), cylindrical straight bore. Locking Method: Set screw. Material: 52100 bearing steel insert, black oxidised; cast iron housing. Cage Material: PPS (polyphenylene sulfide). Closure Type: Felt labyrinth seal. Lubricant: Lithium complex NLGI 2 grease. Decoding the designation: SC — SealMaster cylindrical cartridge. The housing outside diameter is a plain cylinder, so the unit slides into a machined round bore in the customer’s frame rather than bolting to a face. 19 — bore code in sixteenths of an inch: 19/16 = 1-3/16 in shaft. Housing style and mounting form: Housing Style: Cylindrical cartridge, cast iron. Housing width: 1.09 in. The cylindrical outside diameter locates the unit in a bored housing seat and is retained axially by the surrounding structure, which keeps the whole assembly inside the machine envelope. What these specs mean in practice: Bore / Shaft Size: 1-3/16 in. Inner ring width: 1.50 in. Rolling Elements: Balls. Locking Method: Set screw — the extended inner ring carries setscrews that bite into the shaft, which is the quickest mounting to fit and to remove and holds well where rotation runs in one direction. Cage Material: PPS. A polyphenylene sulfide cage runs cooler and lighter than a pressed steel one and stands up to the grease chemistry and moisture of general plant service. Closure Type: Felt labyrinth seal — a low-torque seal that keeps grease in and coarse dust out at modest speed. Material: black oxidised 52100 bearing steel, a finish that adds corrosion resistance and helps the running-in of the raceways. Quantity and configuration: Unit Quantity: 1 Pc. One cylindrical cartridge bearing unit per unit, insert and cast iron housing assembled. Mounting data: Bore / Shaft Size: 1-3/16 in. Inner ring width: 1.50 in. Housing width: 1.09 in. Lubricant: lithium complex NLGI 2. Interchange guidance: MPN Variants: SC-19, SC19, SC 19. SealMaster codes shaft size in sixteenths across its mounted range, so the 19 here matches the 19 in an ER-19 insert or a 2-19 insert at the same 1-3/16 in shaft. Those are the same shaft size on different housing forms.