FafnirRAK1 1/16Flange Mount Ball Bearing Unit – 1-1/16 in Bore, Cast Iron Housing, Eccentric Locking Collar

Product Description

What this part is

Fafnir RAK 1-1/16, a flange mount ball bearing unit supplied with its eccentric locking collar. Bore / Shaft Size: 1.0625 in (1-1/16 in). Housing Style: Flange mount. Material: Cast iron housing. Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Locking Method: Eccentric locking collar. Expansion Type: Non-expansion.

Decoding the designation

RA — Fafnir mounted unit with a self-aligning spherical-seat insert.

K — the eccentric locking collar seat on the extended inner ring.

1-1/16 — the shaft size in inches, which is how this range is numbered.

What these specs mean in practice

The insert sits on a spherical seat inside the housing, so the unit takes up shaft misalignment after the flange is bolted flat to the machine frame. The eccentric locking collar grips the shaft by cam action when it is turned against the inner ring and set with its grub screw, which holds the unit on a plain drawn shaft with no shoulder, threaded nut or keyway. Expansion Type: non-expansion, so this position locates the shaft axially; a second unit further along the shaft carries the thermal growth.

Quantity and configuration

Unit Quantity: 1 Pc. One complete flange unit with its insert and locking collar.

Interchange guidance

Mounted units are numbered to each maker’s own housing and insert system and the housing footprint decides the fit, so no like-for-like interchange is published for this part. Match a replacement on shaft size, bolt centre-to-centre spacing, bolt hole count and pilot diameter. Searchable variants include RAK1-1/16, RAK 1-1/16, RAK-1-1/16, RA1-1/16 and RAK116.