Radial spherical plain bearings

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Radial spherical plain bearings have an inner ring with a sphered convex outside surface and an outer ring with a correspondingly sphered but concave inside surface. Their design makes them particularly suitable for bearing arrangements where alignment movements between shaft and housing have to be accommodated, or where oscillating or recurrent tilting or slewing movements must be permitted at relatively slow sliding speeds. They are available with different sliding contact surface combinations, i.e. the sliding surfaces of inner and outer rings are made from different materials. There are two main groups: spherical plain bearings requiring maintenance (steel-on-steel) and maintenance-free spherical plain bearings.

The radial spherical plain bearings requiring maintenance (steel-on-steel) have hardened sliding contact surface on both rings. The surfaces are treated with molybdenum disulphide (MoS2) lubrication and a phosphate coating. They have both wear and corrosion resistant characteristics. Bearings with this sliding contact surface combination require regular relubrication. The high strength of the sliding contact surfaces makes these bearings especially suitable for bearing arrangements where heavy loads of alternating direction, shock loads or heavy static loads have to be accommodated.

Bearing Number	Bore Dia	Outer DIa	Width	Size
69.85 mm x 120.65 mm x 70.866 mm skf GEZH 212 ESX-2LS Radial spherical plain bearings	711 kN	2.1 mm	250 mm	150 mm
50.8 mm x 90.488 mm x 52.578 mm skf GEZH 200 ES-2LS Radial spherical plain bearings	530 mm	110 mm	850 kN	HA 3038
200 mm x 290 mm x 130 mm skf GE 200 TXG3A-2LS Radial spherical plain bearings	125.0000 mm	70.000 mm	69300 N	5000 rpm
95.25 mm x 149.225 mm x 83.337 mm skf GEZ 312 ES-2RS Radial spherical plain bearings	22340 CC/W33	669 kN	LOR 175	4284.4 N·m
120 mm x 180 mm x 85 mm skf GE 120 ESL-2LS Radial spherical plain bearings	HM 31/950	HMV 190E	13 mm	Tr 950x8
340 mm x 460 mm x 160 mm skf GEC 340 FBAS Radial spherical plain bearings	234 kN	114.3 mm	41.275 mm	SR-36-30
70 mm x 105 mm x 49 mm skf GE 70 ESL-2LS Radial spherical plain bearings	0.07 kg	H7	0.5 m/s	22 mm