TimkenRCJT1Cast Iron Housed Ball Bearing Unit – 1 in Bore, Two Bolt Holes, Eccentric Locking Collar, Sealed

Product Description

What this part is: Timken RCJT1 is a cast iron housed ball bearing unit with two bolt holes, from the Fafnir-lineage RCJ housed range. Bearing Type: Mounted single-row ball bearing insert in a cast iron housing. Bore / Shaft Size: 1 in (25.4 mm). Locking Method: Eccentric self-locking collar, secured by a setscrew. Closure Type: Double rubber seals. Expansion Type: Non-expansion. Relubrication: Stainless steel grease fitting in the housing. Duty: Industrial. Number Of Rows: 1. Decoding the designation: RCJT — the Timken cast iron housed cartridge range carrying two bolt holes, chosen where mounting space is tight. 1 — bore size, a 1 in shaft. What these specs mean in practice: Locking Method: Eccentric self-locking collar. The collar has an offset bore that cams onto the inner ring extension when it is driven in the direction of shaft rotation, then a setscrew holds it there. That grip tightens rather than loosens under normal running direction, which is why an eccentric collar is preferred over plain setscrews on unidirectional conveyor and fan drives. Closure Type: double rubber seals, which keep moisture and airborne grit out of the raceway. The insert’s wide extended inner ring supports more shaft length and carries a larger grease reservoir. Housing style and bolt pattern: Cast iron housing with two bolt holes. The insert’s spherical outside diameter seats in a matching spherical housing bore, so the unit takes up initial shaft misalignment on a frame that is not perfectly machined. Fitting notes: Expansion Type: Non-expansion — the insert holds the shaft in axial position, so a floating unit belongs at the far end of a long shaft. Relubrication: through the stainless steel grease fitting in the housing. Quantity and configuration: Unit Quantity: 1 Pc. Complete housed unit — cast iron housing with the sealed ball insert and its eccentric collar fitted. Interchange guidance: Part Number: RCJT1. Searchable variants: RCJT-1, RCJT 1, RCJT1IN. Adjacent bores in the same range are the RCJT1 1/8, RCJT1 7/16 and RCJT1 15/16. The concentric-collar build in the same family carries the RCJTC prefix.