Manufactured by CHG Bearing, the NN 3007/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 35 mm bore diameter, a 62 mm outer diameter, and a 20 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.
NN 3007/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3007/SP |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Cylindrical Roller Bearing |
| Design Type | Cylindrical Bore |
| Structure (Drawing Reference) | Complete Bearing |
| Number of Rows | 2 |
| Ring Type | None |
| Design | NN Design |
| Tolerance Class | SP |
| Bearing Material | Bearing Steel |
| Coating | None |
| Sealing | None |
| Lubricant | None |
| Features | None |
| Number of Flanges – Outer Ring | 0 |
| Number of Ribs – Inner Ring | 3 |
| Dimensions | |
| Bore Diameter (d) | 35 mm |
| Width (B) | 20 mm |
| Outer Diameter (D) | 62 mm |
| Minimum Chamfer Dimension rmin | 1 mm |
| Inner Ring Chamfer | 1 mm |
| End-face Height Difference h | 1.5 mm |
| Inner-Ring Land Diameter (L1 / d1) | 45.8 mm |
| Outer Ring Raceway Diameter E | 55 mm |
| Shaft Shoulder Diameter dₐ, min. | 40 mm |
| Housing Shoulder Diameter Dₐ, min. | 56 mm |
| Housing Shoulder Diameter Dₐ, max. | 57 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 39.1 kN |
| Basic Static Load Rating C₀ (kN) | 50 kN |
| Limiting Speed – Grease (r/min) | 14000 r/min |
| Limiting Speed – Oil-air (r/min) | 16000 r/min |
| Reference Grease Quantity Gref (cm³) | 1.9 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 5.4 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 820 N/µm |
| Material | |
| Weight (kg) | 0.255 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Machined Metal Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 54 |
NN 3007/SP 62 mm 35 mm 20 mm Frequently Asked Questions about NN 3007/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Beyond standard alloy steel, CHG Bearing can customize the NN 3007/SP Super-Precision Cylindrical Roller Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
As standard production, CHG Bearing subjects NN 3007/SP 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies NN 3007/SP with a precision bore diameter (d) of 35 mm, an outside diameter (D) of 62 mm, and a nominal ring width (B) of 20 mm. This configuration yields an effective cross-sectional wall thickness of 13.5 mm and an envelope ratio (D/d) of 1.77, delivering compact rigidity for OEM machinery housings.
Model NN 3007/SP 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 35 mm) and steep thermal gradients between inner and outer rings.
