Manufactured by CHG Bearing, the 133.45.2500.03K3 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 2279 mm bore diameter, a 2721 mm outer diameter, and a 241 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.
133.45.2500.03K3 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 133.45.2500.03K3 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 2279 mm |
| Width (B) | 241 mm |
| Outer Diameter (D) | 2721 mm |
| Inner/Outer Ring Height H1 | 258 mm |
| End-face Height Difference h | 65 mm |
| Number of Lubrication Holes n1 | 8 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 3342 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2958 mm |
| Lubrication Port Thread / Size Φ1 | M10×1 |
| Inner Ring Mounting Hole Count n2 | 72 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 45 |
| Outer Ring Mounting Hole Count n3 | 72 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 45 |
| Gear Data | |
| Gear Module m | 25 mm |
| Gear Tip Diameter De | 3595 mm |
| Number of Gear Teeth z | 141 |
| Gear Face Width b | 180 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 5145 kg |
133.45.2500.03K3 2721 mm 2279 mm 3342 mm 2958 mm 241 mm Frequently Asked Questions about 133.45.2500.03K3 Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To ensure optimum performance of CHG Bearing 133.45.2500.03K3 Three-row Cylindrical Roller Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 2279 mm bore. For the 2721 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
The Open Type engineered for 133.45.2500.03K3 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
Engineered according to international ISO boundary plans, CHG Bearing supplies 133.45.2500.03K3 with a precision bore diameter (d) of 2279 mm, an outside diameter (D) of 2721 mm, and a nominal ring width (B) of 241 mm. This configuration yields an effective cross-sectional wall thickness of 221.0 mm and an envelope ratio (D/d) of 1.19, delivering compact rigidity for OEM machinery housings.
In its sealed configuration (Open Type), CHG Bearing pre-charges 133.45.2500.03K3 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
