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SKU: NPX-125-4
NPX Pilot Bored Hubs Part 4 (Type B)
NPX 125 Part 4 Pilot Bore Hub (Type B)
£37.26
ex. VAT · £44.71 inc. VAT
JS9 Tight Fit Anti-Roll
H7 Precision Transition Fit
ISO 9001 Quality Assured
Technical Specifications
Power at 100 rev/min kW
2.51
Rated Torque Nm
240
Max Torque Nm
720
Max Speed rev/min
5000
Max Bore d2 (mm)
55
D1 (mm)
18
L2 (mm)
50
C (mm)
30
E (mm)
2-4
Weight Part 4 (kg)
3.6
Weight
3.6kg
Dimensions (L × W × H)
12.6 × 12.6 × 5 cm
Overall envelope
Standards & Fit
JS9
JS9 Keyway
Tight fit anti-roll standard
H7
Precision Transition Fit
Precision bore fit
ISO
ISO 9001:2015
Quality Assured
| Parameter | Value | Notes |
|---|---|---|
| SKU | NPX-125-4 | Aroflex part number |
| Power at 100 rev/min kW | 2.51 | |
| Rated Torque Nm | 240 | |
| Max Torque Nm | 720 | |
| Max Speed rev/min | 5000 | |
| Max Bore d2 (mm) | 55 | |
| D1 (mm) | 18 | |
| L2 (mm) | 50 | |
| C (mm) | 30 | |
| E (mm) | 2-4 | |
| Weight Part 4 (kg) | 3.6 | |
| Weight | 3.6 kg | |
| Dimensions | 12.6 × 12.6 × 5 cm | Overall envelope |
| Bore Tolerance | H7 | Precision transition fit |
| Material | Steel / Friction disc | Standard construction |
| Certification | ISO 9001:2015 | Quality assured |
NPX 125 Part 4 Pilot Bore Hub (Type B)
The NPX 125 Part 4 Pilot Bore Hub is an essential mating component within the Type B flexible coupling family, engineered to provide precise shaft engagement and high torsional stability. This Part 4 component is delivered as a pilot bore hub, offering engineers and maintenance professionals the ultimate flexibility to custom-bore and key the unit to match exact application requirements. Manufactured from high-grade materials, it works seamlessly with the flexible element to absorb misalignments and protect your drivetrain machinery.
Key Features
- Pilot Bore Flexibility: Supplied unbored to allow for precision custom machining, finish boring, and custom keyway installation.
- Robust Type B Compatibility: Engineered to pair perfectly with Part 1 hubs and elastomeric elements for rugged power transmission demands.
- Shock & Vibration Control: Interlocking jaw geometry dampens sudden torque spikes and reduces mechanical stress.
- Durable Construction: High-tensile material properties ensure excellent wear resistance and long operational lifespans under heavy load conditions.
Technical Specifications & Dimensions
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