SKFOH-3144-HOil-Injection Adapter Sleeve – 200 mm Shaft, 220 mm Tapered 1:12 Seat, 161 mm Long, Tr 220×4

Product Description

What this part is

SKF OH 3144 H adapter sleeve for oil injection mounting, for metric shafts. Bore Diameter: 200 mm. Outside Diameter: 220 mm at the small end of the taper. Overall Width: 161 mm. Bore Type: Cylindrical bore, 1:12 tapered outside diameter. Material: Steel. Series: OH 31. Base Number: OH 3144 H. GTIN: 7316570646566.

Decoding the designation

OH is SKF’s adapter sleeve with an integral oil duct, which is what allows the oil injection method to be used for mounting and dismounting. 3144 places it in the 31-series sleeve range at this size. The H suffix marks the version supplied with an HM series lock nut and an MB lock washer. Written as OH-3144-H, OH3144H, OH 3144 H and OH3144 /H.

What these specs mean in practice

The sleeve’s tapered outside diameter is 220 mm, so it carries any 1:12 tapered-bore bearing with a 220 mm bore — the 22244 K, 23144 K and 24144 K sizes and their relatives. Its parallel bore is 200 mm, so it seats on plain 200 mm shafting with no shoulder and no machined seat. The sleeve is slit down one side, so tightening the lock nut drives it up the bearing taper and clamps it to the shaft at the same time. The M6 oil supply duct feeds pressurised oil into distribution grooves in the taper, which floats the bearing on an oil film and lets a sleeve this size be driven up and pulled off with a hand pump rather than by brute torque.

Quantity and configuration

Unit Quantity: 1 Pc. One sleeve per sale unit, supplied with the HM 44 T lock nut and the MB 44 locking washer as SKF packs it.

Mounting data

Lock nut thread: Tr 220×4. Lock nut outside diameter: 280 mm. Lock nut width: 32 mm. Lock nut plus lock washer width: 35 mm. Oil supply duct thread: M6, 10 mm deep. Distance from the bore to the oil supply duct: 3.9 mm. External taper: 1:12. Lock nut: SKF HM 44 T. Locking device: SKF MB 44. Hydraulic nut for drive-up: SKF HMV 44E.

Interchange guidance

An adapter sleeve is matched by three figures: the shaft diameter it seats on, the tapered outside diameter that has to equal the bearing bore, and the lock nut thread. Those are 200 mm, 220 mm and Tr 220×4 here. The oil duct and its distribution grooves are specific to SKF’s OH range, so the part is specified by its own designation. Searchable forms: OH-3144-H, OH3144H, OH 3144 H, OH3144 /H, OH3144.