INAE70KRRSRadial Insert Ball Bearing – 70 mm Bore, 125 mm OD, Cylindrical Outer Ring, Eccentric Locking Collar

Product Description

What this part is

INA E70-KRR-S radial insert ball bearing with an eccentric locking collar. Single row, cylindrical outer ring, sealed on both sides. Bore / Shaft Size: 70 mm. Outside Diameter: 125 mm. Overall Width: 48.5 mm including the collar seat. Outer Ring Width: 28 mm. Locking Collar Total Width: 66 mm. Sealing Total Width: 32 mm. Locking Collar Outside Diameter: 96 mm. Seal Outside Diameter: 109 mm. Inner Ring Rib Diameter: 85.2 mm. Width Across Flats: 6 mm. Number Of Rows: 1. Rolling Elements: balls. Bore Type: cylindrical. Locking Method: eccentric locking collar. Closure Type: R seals both sides. Design Units: Metric.

Decoding the designation

E — INA’s heavy-duty radial insert ball bearing series, with an extended inner ring on both sides of the outer ring.

70 — the shaft size in millimetres, so a 70 mm bore.

KRR — cylindrical outer ring, location on the shaft by eccentric locking collar, R lip seals on both sides.

COL — the eccentric locking collar that ships with the bearing.

What these specs mean in practice

A cylindrical outer ring seats in a plain 125 mm housing bore or a cartridge, so this insert suits a straight-bored housing rather than the spherical seat a Y-bearing uses. Shaft location is by the eccentric collar: the collar bore is machined off centre, and turning it in the direction of shaft rotation wedges it against the extended inner ring, then the grub screw locks it. That gives a fast field fit on drawn or commercial shafting without a keyway, a shoulder or a locknut.

The extended inner ring at 66 mm collar total width gives a long shaft grip and resists the tipping moment that a short insert would pass into the housing. R lip seals on both sides retain grease and exclude dust and washdown, which is why this family runs in conveyor drives, agricultural machinery, fans and material handling.

Quantity and configuration

Unit Quantity: 1 Pc. Bearing and eccentric locking collar together.

Mounting data

Shaft 70 mm, commercial tolerance; housing bore 125 mm. Outer ring width 28 mm sets the housing seat length. Overall width over the bearing 48.5 mm; overall width including the collar 66 mm. Width across the collar flats 6 mm.

Interchange guidance

The current Schaeffler execution on this envelope is the E70-XL-KRR, same 70 x 125 mm geometry and the same eccentric collar location. Bearing Material: chrome steel. Match the outer ring form as well as the bore when substituting: a spherical outer ring insert of the same shaft size seats in a different housing and is a related size rather than a direct interchange.