H.E.R.P.S — Precision Shaft & Bearing Assembly System
Volume 13 — Full Dimensions Blueprint
Hybrid Energy Recovery Pump System (H.E.R.P.S)
System Overview
Volume 13 provides the complete dimensional, tolerance and material specification for the precision shaft and bearing assembly used within the H.E.R.P.S hybrid energy recovery pump system. This blueprint defines critical geometry, surface finish, bearing arrangement, coupling interfaces, vibration control and alignment tolerances required for high‑efficiency rotating machinery.
Main Shaft — Overall Dimensions
- Input Coupling End: 120 mm
- Bearing Seat 1: 80 mm
- Central Rotor Section: 400 mm
- Bearing Seat 2: 80 mm
- Output Coupling End: 120 mm
- Total Length: 800 mm
- Diameters: Ø45 h6, Ø60 h6
- Keyway: 14 mm wide × 8 mm deep
Shaft Section Specifications
| Section | Length (mm) | Diameter (mm) | Tolerance | Surface Finish (Ra) |
|---|---|---|---|---|
| Input Coupling End | 120 | 45 | ±0.001 | ≤ 0.8 µm |
| Bearing Seat 1 | 80 | 45 | ±0.005 | ≤ 0.4 µm |
| Central Rotor Section | 400 | 60 | ±0.01 | ≤ 0.8 µm |
| Bearing Seat 2 | 80 | 45 | ±0.005 | ≤ 0.4 µm |
| Output Coupling End | 120 | 45 | ±0.001 | ≤ 0.8 µm |
Material & Heat Treatment
- Material: AISI 4140 Alloy Steel
- Tensile Strength: 850 MPa
- Yield Strength: 700 MPa
- Hardness: 28–32 HRC (core), 55–60 HRC (surface)
- Heat Treatment: Quench induction hardened
- Straightness: ≤ 0.05 mm / 800 mm
- Balancing Grade: G2.5 (ISO 1940)
Bearing Assembly — Cross Section
- Housing: Cast Steel
- Grease Nipple
- Angular Contact Ball Bearing (Pair, Back‑to‑Back)
- Housing Bore: Ø85 H7
- Spacing: 19 mm
- Total Width: 48 mm
- Shaft Diameter: Ø45 k6
Parts List (Per Side)
| Item | Description | Material |
|---|---|---|
| 1 | Housing | Cast Steel |
| 2 | Angular Contact Bearing | Chrome Steel |
| 3 | Spacer Sleeve | Alloy Steel |
| 4 | Locknut | Alloy Steel |
| 5 | Retaining Ring | Spring Steel |
| 6 | End Cover | Steel |
Bearing Specifications
- Type: Angular Contact Ball Bearing
- Arrangement: Back‑to‑Back (DB)
- Inner Diameter: 45 mm
- Outer Diameter: 85 mm
- Width: 19 mm
- Precision Class: P5 or higher
- Dynamic Load Rating: 49.5 kN
- Static Load Rating: 45.0 kN
- Max Speed (Grease): 5,000 RPM
Coupling Interfaces
- Input Coupling: Flexible Jaw Coupling Ø110
- Output Coupling: Rigid Disc Coupling Ø120
- Keyway: 14 mm W × 9 mm D
Coupling Specifications
- Angular Misalignment: ≤ 1°
- Parallel Misalignment: ≤ 0.25 mm
- Balancing Grade: G6.3 (ISO 1940)
- Finish: Phosphate‑Coated Alloy Steel
Shaft Alignment & Tolerances
| Parameter | Limit |
|---|---|
| Angular Misalignment | ≤ 0.02° |
| Angular Offset | ≤ 0.03 mm |
| Runout (TIR) | ≤ 0.01 mm |
| End Play | ≤ 0.05 mm |
| Perpendicularity | ≤ 0.02 mm |
| Concentricity | ≤ 0.01 mm |
Thermal Expansion Allowance
- Fixed Bearing: Driven Side
- Floating Bearing: Non‑Driven Side
- Shaft Expansion Gap: 0.02–0.05 mm
Vibration Control & Support System
- Mounting Base Length: 820 mm
- Isolation Mount Height: 180 mm
- Max Vibration (RMS): ≤ 2.8 mm/s
- Frequency Range: 10–1,000 Hz
- Isolation Efficiency: ≥ 90%
- Balancing Grade: G2.5 (ISO 1940)
Shaft Support & Loading
| Parameter | Value |
|---|---|
| Max Radial Load | 25 kN |
| Max Axial Load | 12 kN |
| Safety Factor (Static) | 1.5 |
| Safety Factor (Dynamic) | 2.0 |
Lubrication System
- Lubricant: Grease
- Grease Type: NLGI 2 (High Temp)
- Relubrication Interval: 2,000 hours
- Operating Temperature: −10°C to +90°C
Engineering Notes
- All dimensions in millimeters
- General tolerances: Linear ±0.05 mm, Angular ±0.5°
- Surface finish: Ra ≤ 0.8 µm unless specified
- Bearings must be laser‑aligned and preloaded
- Assembly torque values per Volume 1 master blueprint
Blueprint Access & Licensing
Volume 13 of the H.E.R.P.S Precision Shaft & Bearing Assembly System is part of the complete engineering blueprint package available exclusively through BlueprintsMarket.com.
Contact Blueprints Market for licensing, integration support or enterprise‑level deployment.
