Manufactured by CHG Bearing, the N 1011 KTNHA/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 55 mm bore diameter, a 90 mm outer diameter, and a 18 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.
N 1011 KTNHA/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | N 1011 KTNHA/SP |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Cylindrical Roller Bearing |
| Design Type | Tapered Bore 1:12 |
| Structure (Drawing Reference) | Complete Bearing |
| Number of Rows | 1 |
| Ring Type | None |
| Design | High-speed 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 | 2 |
| Dimensions | |
| Bore Diameter (d) | 55 mm |
| Width (B) | 18 mm |
| Outer Diameter (D) | 90 mm |
| Minimum Chamfer Dimension rmin | 1 mm |
| Inner Ring Chamfer | 0.6 mm |
| End-face Height Difference h | 2.5 mm |
| Inner-Ring Land Diameter (L1 / d1) | 68.2 mm |
| Outer Ring Raceway Diameter E | 81 mm |
| Shaft Shoulder Diameter dₐ, min. | 61.5 mm |
| Housing Shoulder Diameter Dₐ, min. | 82 mm |
| Housing Shoulder Diameter Dₐ, max. | 83.5 mm |
| Permissible Axial Displacement s₁, max. – TNHA Cage Option | 1.5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 39.1 kN |
| Basic Static Load Rating C₀ (kN) | 46.5 kN |
| Limiting Speed – Grease (r/min) | 17000 r/min |
| Limiting Speed – Oil-air (r/min) | 24000 r/min |
| Reference Grease Quantity Gref (cm³) | 4.9 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 5.5 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 590 N/µm |
| Material | |
| Weight (kg) | 0.38 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
N 1011 KTNHA/SP 90 mm 55 mm 18 mm Frequently Asked Questions about N 1011 KTNHA/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for N 1011 KTNHA/SP, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
Beyond standard alloy steel, CHG Bearing can customize the N 1011 KTNHA/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.
When fitting N 1011 KTNHA/SP over a 55 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Engineered according to international ISO boundary plans, CHG Bearing supplies N 1011 KTNHA/SP with a precision bore diameter (d) of 55 mm, an outside diameter (D) of 90 mm, and a nominal ring width (B) of 18 mm. This configuration yields an effective cross-sectional wall thickness of 17.5 mm and an envelope ratio (D/d) of 1.64, delivering compact rigidity for OEM machinery housings.
