Manufactured by CHG Bearing, the 7397/2398 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 2398 mm bore diameter, a 2900 mm outer diameter, and a 220 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.
7397/2398 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 7397/2398 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 2398 mm |
| Width (B) | 220 mm |
| Outer Diameter (D) | 2900 mm |
| Inner/Outer Ring Height H1 | 210 mm |
| End-face Height Difference h | 50 mm |
| Number of Lubrication Holes n1 | 8 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 3315 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2990 mm |
| Lubrication Port Thread / Size Φ1 | M14×1.5 |
| Inner Ring Mounting Hole Count n2 | 56 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 39 |
| Outer Ring Mounting Hole Count n3 | 56 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 39 |
| Gear Data | |
| Gear Module m | 22 mm |
| Gear Tip Diameter De | 3520 mm |
| Number of Gear Teeth z | 158 |
| Gear Face Width b | 160 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 3736 kg |
7397/2398 2900 mm 2398 mm 3315 mm 2990 mm 220 mm Frequently Asked Questions about 7397/2398 Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 7397/2398 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 2398 mm) and steep thermal gradients between inner and outer rings.
Engineered according to international ISO boundary plans, CHG Bearing supplies 7397/2398 with a precision bore diameter (d) of 2398 mm, an outside diameter (D) of 2900 mm, and a nominal ring width (B) of 220 mm. This configuration yields an effective cross-sectional wall thickness of 251.0 mm and an envelope ratio (D/d) of 1.21, delivering compact rigidity for OEM machinery housings.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 7397/2398, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
Standard batches of CHG Bearing 7397/2398 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
