GEG..E(S) GEG..ES 2RS Series — Heavy-Duty Spherical Plain Bearing Maintenance Required

GEG..ES / 2RS — 20 bore sizes · d 6–120 mm · Higher load ratings · Larger misalignment angle · Heavy-duty.

MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.


Spherical Plain Bearings › Heavy-Duty Type

GEG..E(S) GEG..ES 2RS Series — Heavy-Duty Spherical Plain Bearing Maintenance Required

20 bore sizes · d 6–120 mm · Higher load ratings · Larger misalignment angle · Heavy-duty

Heavy-Duty20 Sizes 6–120mmLarger Misalignment AngleES Lube Grooves2RS Lip Seals

🆕 Series Overview

The GEG..ES and GEG..ES 2RS series are heavy-duty spherical plain bearings providing higher load ratings and larger misalignment angles than the standard GE..ES for equivalent bore sizes. The larger outer diameter and longer B dimension of GEG bearings accommodate a wider spherical raceway, increasing both the dynamic and static load capacity and the rated misalignment angle.

Available in 20 bore sizes from 6 mm to 120 mm, with dynamic load ratings from 5.50 kN to 1,080 kN and misalignment angles up to 21°. The same three designation variants apply: GEG..E (open), GEG..ES (with lubrication grooves and holes), and GEG..ES 2RS (with additional lip seals). GEG bearings are specified wherever the standard GE load rating or misalignment angle is insufficient.

GEG..ES / 2RS spherical plain bearing product view

⚙ Key Design Features

📈

Higher Load Ratings

Larger outer diameter and wider raceway deliver substantially higher dynamic and static load ratings than equivalent GE bore sizes — up to 1,080 kN static for GEG120ES.

🔁

Larger Misalignment Angle

Rated misalignment angle α is greater than the standard GE series for the same bore, accommodating applications with larger structural angular deflections.

🔒

2RS Sealed Option

Outer ring lip seals on both sides retain grease and exclude contamination for industrial environments without additional housing seals.

⚙

ES Lubrication Grooves

Circumferential groove and oil holes in both rings ensure even grease distribution across the full spherical contact surface during re-lubrication.

🔭

Phosphate Treatment

Both rings phosphate-treated for improved corrosion resistance and grease adhesion at the sliding interface.

✅

20 Bore Sizes

6 mm to 120 mm covering the full range of heavy industrial pivot and linkage applications.

📋 Complete Specification Table

ⓘ Load ratings in kN. GEG series has larger D and B than GE for the same bore d — verify housing bore against specification table. α = maximum misalignment angle. Weight in grams.

Part Number Part Number 2RS d (mm) D (mm) B (mm) C (mm) Dk (mm) R1s R2s α° Dyn C (kN) Sta Co (kN) Wt (g)
GEG6E — 6 16 9 5 13 0.3 0.3 21 5.5 27.5 8
GEG8E — 8 19 11 6 16 0.3 0.3 21 8.15 40.5 14
GEG10E — 10 22 12 7 18 0.3 0.3 18 10.8 54 20
GEG12E — 12 26 15 9 22 0.3 0.3 18 17.0 85.0 34
GEG15ES GEG15ES 2RS 15 30 16 10 25 0.3 0.3 16 21.2 106 46
GEG17ES GEG17ES 2RS 17 35 20 12 29 0.3 0.3 19 30.0 146 75
GEG20ES GEG20ES 2RS 20 42 25 16 35.5 0.6 0.6 17 48.0 240 150
GEG25ES GEG25ES 2RS 25 47 28 18 40.7 0.6 0.6 17 62.0 310 190
GEG30ES GEG30ES 2RS 30 55 32 20 47 0.6 1.0 17 80.0 400 290
GEG35ES GEG35ES 2RS 35 62 35 22 53 0.6 1.0 16 100 500 390
GEG40ES GEG40ES 2RS 40 68 40 25 60 0.6 1.0 17 127 640 520
GEG45ES GEG45ES 2RS 45 75 43 28 66 0.6 1.0 15 156 780 680
GEG50ES GEG50ES 2RS 50 90 56 36 80 0.6 1.0 17 245 1220 1400
GEG60ES GEG60ES 2RS 60 105 63 40 92 1.0 1.0 17 315 1560 2000
GEG70ES GEG70ES 2RS 70 120 70 45 105 1.0 1.0 16 400 2000 2900
GEG80ES GEG80ES 2RS 80 130 75 50 115 1.0 1.0 14 490 2450 3500
GEG90ES GEG90ES 2RS 90 150 85 55 130 1.0 1.0 15 610 3050 5400
GEG100ES GEG100ES 2RS 100 160 85 55 140 1.0 1.0 14 655 3250 5900
GEG110ES GEG110ES 2RS 110 180 100 70 160 1.0 1.0 11 950 4750 1100
GEG120ES GEG120ES 2RS 120 210 115 70 180 1.0 1.0 16 1080 5400 1500
GEG..ES / 2RS dimensional drawing

🔄 Interchange / Cross-Reference Table

GBC spherical plain bearings are dimensionally interchangeable with the following major brand designations:

GBC SKF FAG ELGES IKO NTN NMB
GE..E(S) GE..E GE..E GE..DO GE..E SA1~..B SBH..NS
GE..ES 2RS GE..ES GE..ES GE..DO 2RS GE..ES 2FRS SA1~..BSS SBH..S
GEG..E(S) GEH..E GEH..E GE..FO GEG..E GE..G —
GE..C GE..C GE..C GE..UK GE..C SAR1~... —
GE..ET 2RS GE..TE 2TS GE..UA 2RS GE..UK 2RS GE..ET 2RS — —
PB — — GE..PB GEBK..S PB.. —

🔭 Materials & Construction

Same 100Cr6 chrome steel (HRC 58–64) as the GE series. The GEG outer ring has a greater wall thickness due to the larger OD, providing higher raceway stiffness under heavy loads. Phosphate-treated inner and outer surfaces. NBR lip seals for 2RS variants rated −30°C to +110°C.

●

100Cr6 Chrome Steel

Larger outer ring wall thickness versus GE series. HRC 58–64. Spherical surfaces ground to Ra 0.1–0.2 µm.

🔭

Phosphate Treatment

Applied to both rings for corrosion resistance and grease adhesion.

🔒

NBR Seals (2RS)

Rated −30°C to +110°C. Outer ring split in axial direction for assembly.

🏭 Typical Applications

⚙

Heavy Hydraulic Cylinders

Large bore hydraulic actuator clevis joints in construction equipment, offshore platforms, and heavy press machines where load exceeds standard GE ratings.

📈

Mining Equipment

Conveyor drive pivot joints, crusher toggle plate bearings, and hydraulic ram clevis pins in mining machinery require the elevated load capacity of the GEG series.

🔎

Steel Mill Equipment

Rolling mill guide arm pivots, shear blade linkages, and press frame joints use GEG bearings for their high load capacity under cyclic shock loads.

⚙

Offshore & Marine

Deck crane pivot joints, mooring winch linkages, and hydraulic stabiliser mounts in marine equipment use large GEG bearings for load capacity under extreme dynamic conditions.

🔭

Agricultural Heavy Duty

Large baler knotter drives, forage harvester knife head pivots, and self-propelled sprayer boom joints use GEG bearings for higher loads than standard GE can sustain.

📈

Bridge & Civil Structures

Expansion joint bearings and structural pivot points in bridge designs use GEG series for high static loads and large angular deflection during thermal expansion.

GEG..ES / 2RS bearing in application

🔧 Installation & Maintenance

🔎 Housing Bore

K7 or M7 tolerance for heavy loads. Verify housing bore against the larger GEG outer diameter — housings designed for GE series cannot accept GEG bearings of the same bore.

🔧 Shaft Tolerance

h6 for press fit; js6 for tight sliding. Use a hydraulic press for larger bore sizes — do not use impact force.

📈 Initial Lubrication

NLGI-2 EP grease. Fill 40% of internal cavity. For high-load applications, specify EP2 (extreme pressure) additive grease.

⚙ Re-lubrication Interval

200–400 hours under heavy continuous loads. Increase frequency in contaminated or wet environments. Purge until fresh grease exits.

🌡 Temperature Limit

Standard: −30°C to +110°C. For elevated temperature, specify high-temperature EP grease and FKM seals.

🔒 Load Direction

GEG bearings accept radial loads and combined radial plus axial loads. The maximum axial load fraction is typically 30% of C₀. Do not apply pure axial loads without verifying against the catalogue axial load data.

🔎 Selection Guide

Select GEG series when the standard GE dynamic load rating or misalignment angle is insufficient for the application. GEG housing bores are larger than GE for the same bore — existing GE housings cannot be used without re-machining.

①

Identify Load Type

Confirm load exceeds standard GE rating or required misalignment angle exceeds the GE rated α before selecting GEG.

②

Select Bore & Series

Match bore d to shaft nominal. Verify GEG outer diameter D and width B against available housing bore depth.

③

Verify Misalignment Angle

Verify maximum misalignment angle against GEG-rated α. Calculate equivalent load including axial component — GEG series accepts higher combined loads.

④

Contact Us

MOQ 100 units. Contact our team with bore diameter, load case, misalignment angle, oscillation frequency, and operating environment.

❓ Frequently Asked Questions

▶ What is the difference between GE..E, GE..ES, and GE..ES 2RS?

GE..E is the basic open type with no seals. GE..ES adds lubrication grooves and oil holes in both the outer and inner rings to improve grease distribution during re-lubrication. GE..ES 2RS adds lip seals on both sides of the outer ring to retain grease and exclude contamination — the most common choice for industrial use where contamination is a concern.

▶ How often should the bearing be re-lubricated?

Re-lubrication interval depends on load, speed, temperature, and contamination level. As a starting point: under moderate load and normal industrial conditions, re-lubricate every 200–500 hours of operation with NLGI-2 EP grease. In oscillating or slowly rotating applications, re-lubricate more frequently. Bearings should be purged until fresh grease appears at the seal or fitting.

▶ What shaft and housing tolerances are recommended?

Inner ring bore: shaft tolerance h6 or js6 for press fit; f7 for sliding fit. Outer ring in housing: housing bore tolerance H7 or K7 for normal conditions; M7 for heavy loads. Refer to the ISO tolerance tables in the catalogue for specific fits by bore diameter range.

▶ What is the maximum misalignment angle?

The maximum misalignment angle α is listed in the specification table for each size. This represents the maximum angle between the inner and outer ring axes. Exceeding this angle causes edge loading at the spherical race and significantly reduces service life. Align shafts as accurately as possible and use the spherical capacity only to accommodate unavoidable structural deflection.

▶ Can GE..ES bearings be used in high-temperature environments?

Standard GE..ES bearings with NBR seals and mineral-oil grease are rated for continuous operation up to +120°C. For elevated temperatures up to +200°C, specify high-temperature grease and FKM seals. For cryogenic applications below −30°C, use low-temperature grease. Contact GBC for specific temperature requirements outside the standard range.

📞 Ready to Order?

MOQ is 100 units per model. Provide bore diameter, housing bore, radial and axial loads, misalignment angle, oscillation amplitude and frequency, and operating environment. All catalogue data is for reference only — verify against current drawings before finalising design.

GEG..ES / 2RS — 20 bore sizes · d 6–120 mm · Higher load ratings · Larger misalignment angle · Heavy-duty.

MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.

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