INA Spherical plain bearings, requiring maintenance

INA Spherical plain bearings allow spatial adjustment movements and, depending on the bearing type, can support radial, combined or axial loads.

INA radial spherical plain bearings

INA radial spherical plain bearings requiring maintenance comprise inner rings and outer rings with a steel/steel or steel/bronze sliding contact surface. The inner rings have a cylindrical bore with a curved outer slideway. The outer rings have a cylindrical outside surface and a concave inner slideway.

As a sliding contact surface, the series GE..-DO, GE..-HO, GE..-FO, GE..-LO and GE..-ZO have inner and outer rings made from steel. Series GE..-PB has a steel inner ring and a bronze outer ring.

Bearings of series GE-ZO are available in inch sizes. The bearings are available in open designs and in designs sealed on both sides, see dimension tables.

INA Spherical plain bearings GE..-LO have bore dimensions to standard sizes and dimensions in accordance with DIN 24338 for standard hydraulic cylinders.

INA Radial spherical plain bearings can support radial forces, transmit motion and loads with low moment levels, thus keeping bending stresses away from the construction elements. The bearings are particularly suitable for alternating loads with impact and shock type stresses and support axial loads in both directions.

Outer ring

In bearings of diameter d >= 320 mm, the outer ring is axially split at two points and held together by means of heavy-section retaining washers.

Inner ring

GE..-FO and GE..-FO-2RS(-2TS) have extended inner rings. As a result, larger tilt angles are possible.

GE..-HO-2RS has cylindrical extensions on the inner ring. As a result, spacer rings are not required if the bearing is mounted in a clevis.

Sealing

Sealed bearings have the suffix 2RS, 2TS or 2RS4. They are protected by lip seals on both sides against contaminants and water spray. Radial spherical plain bearings GE..-DO-2TS and GE..-FO-2TS are sealed on both sides by integrated, triple lip high performance seals. Large radial spherical plain bearings GE..-DO-2RS4 have seals with increased sealing action for very high requirements.

Series and design

INA angular contact spherical plain bearings

INA angular contact spherical plain bearings GE..-SX correspond to DIN ISO 12240-2. They have inner rings with a curved outer slideway and outer rings with a concave inner slideway, where a steel/steel sliding contact surface is present.

The bearings are available for shaft diameters from 25 mm to 200 mm. Other sizes are available by agreement.

Area of application

INA angular contact spherical plain bearings can support axial forces as well as radial forces. As a result, they are suitable for alternating dynamic loads.

The bearings are used where loads acting in conjunction with small swivel angles would damage rolling element bearings. They are a good plain bearing alternative to tapered roller bearings 320..-X in accordance with ISO 355 and DIN 720, since they have the same mounting dimensions.

Since motion and loads are transmitted with low moment levels, bending stresses are kept away from the construction elements.

INA thrust spherical plain bearings

Axial spherical plain bearings GE..-AX correspond to DIN ISO 12240-3. In these units, the shaft locating washer is supported in the ball socket-shaped sliding zone of the housing locating washer, where a steel/steel sliding contact surface is present.

The sliding material in the housing locating washer is ELGOGLIDE or, in the case of a nominal diameter d >= 220 mm, ELGOGLIDE in X-life.

The bearings are available for shaft diameters from 10 mm to 200 mm. Other sizes are available by agreement.

related articles

• INA Spherical plain bearings suffixes and cross reference
• INA plain bearings selection
• INA plain bearing selection by material suitability

INA GE40-DO bearings
40mm x 62mm x 28mm

INA GE60-DO bearings
60mm x 90mm x 44mm

INA GE30-DO-2RS bearings
30mm x 47mm x 22mm

INA GE40-DO-2RS bearings
40mm x 62mm x 28mm

INA GE50-DO-2RS bearings
50mm x 75mm x 35mm

INA GE45-FO-2RS bearings
45mm x 75mm x 43mm

INA GE60-FO-2RS bearings
60mm x 105mm x 63mm

INA GE50-SX bearings
50mm x 80mm x 20mm

SKF radial spherical plain bearings requiring maintenance

SKF maintenance-free spherical plain bearings

INA Spherical plain bearings, maintenance-free