Manufactured by CHG Bearing, the 179254G2 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 270 mm bore diameter, a mm outer diameter, and a 86 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
179254G2 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 179254G2 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 270 mm |
| Width (B) | 86 mm |
| Inner/Outer Ring Height H1 | 81 mm |
| End-face Height Difference h | 5 mm |
| Number of Lubrication Holes n1 | 3 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 456 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 300 mm |
| Lubrication Port Thread / Size Φ1 | ZG1/4 |
| Inner Ring Mounting Hole Count n2 | 9 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 18 |
| Outer Ring Mounting Hole Count n3 | 9 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 16 |
| Gear Data | |
| Gear Module m | 8 mm |
| Gear Tip Diameter De | 520 mm |
| Number of Gear Teeth z | 63 |
| Gear Face Width b | 80 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 70 kg |
179254G2 mm 270 mm 86 mm 456 mm 300 mm Frequently Asked Questions about 179254G2 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects 179254G2 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
Model 179254G2 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 270 mm) and steep thermal gradients between inner and outer rings.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 179254G2. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
To extend the trouble-free lifespan of CHG Bearing 179254G2, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
