B 30 / D 55GEG30C Spherical Bearing (Metric)
GEGC Product Overview
GEG30C is a wide-series metric spherical bearing with a 30 mm bore (B) and 55 mm OD (D). Width (W) = 32 mm, inner race width (T) = 20 mm. Approximate weight: 0.304 lb.
Rated at 212 kN static radial load with ±17.0° misalignment angle. The wide-body design provides higher misalignment angle compared to the standard GEC series. The 52100 bearing steel ball is precision ground, heat treated, and hard chrome plated. The carbon steel race is PTFE-lined for self-lubricating, maintenance-free operation, with optional zinc plating. Suited to heavy-pivot assemblies, suspension components, and applications requiring increased misalignment range in a metric package.
Zinc plated race option available on request. Standard-width metric equivalent is the GEC series. Inch-size fractured-race equivalent is the GEZ series.
GEGC Series — Full Size Range
All available sizes in the GEGC series. Can’t find your size? Contact us for custom dimensions.
| WIDE SERIES PART NO. | B | D | W | T | O | a° | STATIC RADIAL LOAD (LBS) | APPROX WEIGHT (LBS) |
|---|---|---|---|---|---|---|---|---|
| GEG4C | 4 | 14 | 7 | 4 | 0.3 | 20.0 | 9 | 0.005 |
| GEG5C | 5 | 16 | 9 | 5 | 0.3 | 21.0 | 14 | 0.006 |
| GEG6C | 6 | 16 | 9 | 5 | 0.3 | 21.0 | 14 | 0.008 |
| GEG8C | 8 | 19 | 11 | 6 | 0.3 | 21.0 | 21 | 0.014 |
| GEG10C | 10 | 22 | 12 | 7 | 0.3 | 18.0 | 28 | 0.021 |
| GEG12C | 12 | 26 | 15 | 9 | 0.3 | 18.0 | 45 | 0.033 |
| GEG15C | 15 | 30 | 16 | 10 | 0.3 | 16.0 | 56 | 0.049 |
| GEG17C | 17 | 35 | 20 | 12 | 0.3 | 19.0 | 78 | 0.083 |
| GEG20C | 20 | 42 | 25 | 16 | 0.3 | 17.0 | 127 | 0.153 |
| GEG25C | 25 | 47 | 28 | 18 | 0.6 | 17.0 | 166 | 0.203 |
| GEG30C | 30 | 55 | 32 | 20 | 0.6 | 17.0 | 212 | 0.304 |
Every Unit Inspected Before Shipment
Raw Material Inspection
Material certifications verified. Composition confirmed by spectrometer before machining begins.
Thread Gauge Inspection
100% go/no-go gauge check on all threaded sections. Zero tolerance on dimensional non-conformance.
Load Capacity Test
Static and dynamic load tests run on representative samples from each production batch.
Dimensional Measurement
CMM verification of critical dimensions — ball diameter, bore, thread pitch, and body length.
Surface Inspection
Visual and tactile inspection for burrs, scratches, surface cracks, and plating defects.
Articulation Test
Misalignment angle and torque measured to confirm liner performance meets specification.
Heat Treatment Verify
Hardness tests confirm proper heat treatment on chromoly steel bodies and bearing balls.
Batch Documentation
Full traceability from raw material heat number to finished part. COC and inspection reports available.
Where GEGC Spherical Bearings Are Used
More from the GEGC Series
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GEGC Frequently Asked Questions
What is GEGC used for?
GEGC spherical bearings are used in wide-series metric articulated joints and linkage positions where self-lubricating PTFE-lined movement and larger section dimensions are required.
What materials are used in GEGC spherical bearings?
GEGC uses a 52100 bearing steel ball, precision ground, heat treated, and hard chrome plated, together with a carbon-steel outer ring that is PTFE lined and may be zinc plated as an option.
Is GEGC self-lubricating?
Yes. GEGC is a self-lubricating spherical-bearing series built around PTFE-lined race construction for low-friction articulation.
What makes GEGC different from GEC?
GEGC is the wide-series version of the metric self-lubricating spherical-bearing platform, with larger section dimensions than the standard-width GEC series for similar bore sizes.
When should I choose GEGC instead of a standard-width bearing?
Choose GEGC when the application benefits from wide-series geometry, larger section dimensions, and the same PTFE-lined self-lubricating articulation used in the GEC family.
How do I choose the right GEGC size?
Start with the required bore, OD, widths, misalignment angle, and static radial load in the size chart, then confirm the wide-series geometry suits the available packaging and duty level.