IKO GE15ES-2RS Spherical Plain Bearing, Steel-on-Steel, With Seals, 15 mm Bore

This page covers the sealed IKO GE..ES-2RS spherical plain bearings (spherical bushings) for 15 to 140 mm shafts, 17 sizes from GE15ES-2RS to GE140ES-2RS. Choose the shaft diameter from the drop-down; each variant has its own dimensions, load capacities and mass in the Model Details.

GE..ES is a steel-on-steel type: inner and outer rings of high carbon chromium bearing steel, with phosphate-treated sliding surfaces that are dry-coated with molybdenum disulfide (MoS2). The outer ring is split at one position. The -2RS suffix marks the sealed type, which has double-lip polyurethane seals that are effective against grease leakage and dust penetration. Each ring has an oil groove and two oil holes.

Where this product is used

• Pivots and linkages in industrial machinery and construction machinery
• Joints with alternate loads and shock loads
• Mountings where the shaft and housing can be slightly out of line and the bearing must self-align
• Joints that carry a radial load and an axial load in both directions at the same time

Features

• Steel-on-steel: high carbon chromium bearing steel rings, phosphate-treated and dry-coated with molybdenum disulfide (MoS2) for low torque, wear resistance and large load capacity
• Self-aligning spherical sliding surfaces that carry a radial load and a bi-directional axial load at the same time
• Sealed type (2RS): double-lip polyurethane seals effective against grease leakage and dust penetration
• Oil groove and two oil holes on the inner ring and on the outer ring
• Dynamic load capacity Cd 19.4 to 1,240 kN and static load capacity Cs 117 to 7,410 kN across the 17 sizes on this page
• Permissible tilting angle 3 to 7° (sealed value α1)

Key specifications

Available sizes

The tilting angle shown is α1, the value for the sealed type.

Selecting the right option

The drop-down is the shaft diameter in mm, which is the bore of the bearing: the number in the part number is the bore size (for example GE15ES-2RS has a 15 mm bore). Every size on this page is a metric size.

The tilting angle in the Model Details is α1, the value for the sealed type. The same bearing without seals has a larger tilting angle α, which does not apply to these -2RS part numbers. The small E bores (8 to 12 mm) are on the GE..E page.

The G series is the higher load capacity alternative: at the same 45 mm bore, GE45GS-2RS has Cd 181 kN and a 13° tilting angle with seals, against Cd 147 kN and 4° for GE45ES-2RS. The G series has a larger outside diameter and width than the E series at the same bore, so check the housing.

Steel-on-steel or maintenance-free is chosen from the operating conditions: load, lubrication, temperature and sliding velocity. This is a steel-on-steel type, which needs periodic grease lubrication and suits alternate loads and shock loads. If you are unsure, send AIMS the load, motion and environment and we will help you choose.

Fitting and use

Recommended fits for steel-on-steel bushings: shaft h6 or j6 with housing bore H7 or J7 for normal operation, and shaft m6 or n6 with housing bore M7 or N7 when the load direction is indeterminate. N7 is recommended for light metal housings.

When the load is large, the shaft can slip in the inner ring bore: prepare the shaft to a hardness of 58 HRC or greater and a surface roughness of 0.8 μm Ra or less.

When mounting, set the split plane of the outer ring at right angles to the direction of the load, so that the load does not act on the split.

Steel-on-steel bushings need periodic grease lubrication as a general rule, and a shorter interval is recommended during initial operation. Lithium soap based grease (NLGI consistency No. 2) containing molybdenum disulfide is widely used.

For steel-on-steel bushings the recommended load is up to 0.3 x Cd for a constant load and up to 0.6 x Cd for an alternate load. Radial and axial loads can act together. The equivalent radial load is P = Fr + Y x Fa, where Y is 1, 2, 3, 4 and 5 for an Fa/Fr of 0.1, 0.2, 0.3, 0.4 and 0.5; an Fa/Fr above 0.5 is marked unusable.

The operating temperature range of bushings with seals is -30 to +80 °C.

Cd is the dynamic load capacity (the maximum allowable load under oscillating motion, based on the contact pressure on the spherical surfaces) and Cs is the static load capacity.

Related products

Other IKO spherical plain bearing pages: GE..E spherical plain bearings (8 to 12 mm bore), GE..GS-2RS sealed spherical plain bearings (higher load capacity), GE..EC-2RS maintenance-free sealed spherical plain bearings and GE..EC maintenance-free spherical plain bearings.