SKU: RB500BH RB Hubs / Flanges

RB.500 Bush Half Hub Pilot Bore (Pilot Bore)

£1,145.04

ex. VAT · £1,374.05 inc. VAT
JS9 Tight Fit Anti-Roll H7 Precision Transition Fit ISO 9001 Quality Assured
In Stock — Dispatches within 24 hours. Bulk orders (10+) available — call for lead time.
Technical Specifications
Rated Torque (Nm)
25802
kW Rating at 100rpm
270.2
Maximum Speed rpm
1350
Minimum Bore (mm)
95
Max. Bore ød1 (mm)
200
Max. Bore ød2 (mm)
200
ø A (mm)
500
ø D1 (mm)
290
ø D2 (mm)
290
E (mm)
200
C (mm)
4-12
Moment of Inertia kg.m²
4.7
Max. Misalignment Angular
0.5
Max. Misalignment parallel
1.1
Max. Misalignment Axial
4
No. of holes
14
Weight
30kg
Standards & Fit
JS9
JS9 Keyway Tight fit anti-roll standard
H7
Precision Transition Fit Precision bore fit
ISO
ISO 9001:2015 Quality Assured
ParameterValueNotes
SKU RB500BH Aroflex part number
Rated Torque (Nm) 25802
kW Rating at 100rpm 270.2
Maximum Speed rpm 1350
Minimum Bore (mm) 95
Max. Bore ød1 (mm) 200
Max. Bore ød2 (mm) 200
ø A (mm) 500
ø D1 (mm) 290
ø D2 (mm) 290
E (mm) 200
C (mm) 4-12
Moment of Inertia kg.m² 4.7
Max. Misalignment Angular 0.5
Max. Misalignment parallel 1.1
Max. Misalignment Axial 4
No. of holes 14
Weight 30 kg
Bore Tolerance H7 Precision transition fit
Certification ISO 9001:2015 Quality assured

RB.500 Bush Half Hub (Pilot Bore)

The RB.500 Bush Half Hub serves as the companion mating element in the RB.500 flexible coupling group. Supplied with a standard pilot bore for custom re-boring and keying, this precision hub houses the barrel-shaped elastomeric bushes. It is critical for absorbing torque peaks and stabilizing parallel or angular misalignment.

Product Features

  • Model Size: RB.500 Configuration
  • Hub Class: Bush Half Variant
  • Bore Type: Pilot Bore for tailored installation options.
  • Custom Machining: Available with custom boring and keying profiles tailored to your shaft requirements through our In-House Machining Services.
RB Coupling Diagram
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H Cunningham
18 February 2025
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Very helpful, friendly staff.
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P Wâtëŕs
16 August 2023
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Excellent service and customer support. Professional staff. And really informative.
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T hall
29 November 2021
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Very helpful company....above 5 star rated.
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B Kennedy
16 November 2020
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Very very helpful a pleasure to deal with you
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D Birch
25 October 2020
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Everytime ive been here they have had what i needed, and good prices, so all good with me

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