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SKU: HTDPB408M85
HTD Timing Belt Pulleys
40-8M-85 HTD PULLEY PILOT BORE
£44.00
ex. VAT · £52.80 inc. VAT
JS9 Tight Fit Anti-Roll
H7 Precision Transition Fit
ISO 9001 Quality Assured
Technical Specifications
Number of Teeth
40
Pitch (mm)
8
Belt Width (mm)
85
Bore Type
Pilot Bore (Pre-bored)
Pitch Diameter (mm)
101.86
Outside Diameter (mm)
100.49
Face Width (mm)
95
Stock Pilot Bore (mm)
15
Max Re-Bore Diameter (mm)
65
Weight
5.4kg
Dimensions (L × W × H)
9.5 × 9.5 × 9.5 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 | HTDPB408M85 | Aroflex part number |
| Number of Teeth | 40 | |
| Pitch (mm) | 8 | |
| Belt Width (mm) | 85 | |
| Bore Type | Pilot Bore (Pre-bored) | |
| Pitch Diameter (mm) | 101.86 | |
| Outside Diameter (mm) | 100.49 | |
| Face Width (mm) | 95 | |
| Stock Pilot Bore (mm) | 15 | |
| Max Re-Bore Diameter (mm) | 65 | |
| Weight | 5.4 kg | |
| Dimensions | 9.5 × 9.5 × 9.5 cm | Overall envelope |
| Bore Tolerance | H7 | Precision transition fit |
| Certification | ISO 9001:2015 | Quality assured |
40-8M-85 HTD Timing Pulley [Pilot Bore Variant]
The 40-8M-85 HTD Timing Pulley is supplied in a raw pilot bore configuration to allow customized mechanical fitment onto specialized shafts. Its 40 curvilinear teeth follow an 8mm pitch track, managing wide-format 85mm synchronous belts without noise or friction spikes. The unfinished solid hub allows you to bore out custom keyways or set-screw constraints easily.
Product Features & Specifications
- Tooth Configuration: 40 precision-machined synchronous HTD teeth.
- Pitch & Belt Width: 8mm high-torque drive profile engineered for 85mm wide timing belts.
- Bore Status: Stock Pilot Bore center hub layout, letting you drill to unique millimetric constraints.
- Industrial Build Quality: Fabricated from industrial Steel (St) or wear-resistant Cast Iron (GG).
- Boring & Keying Readiness: Provided in standard raw stock configuration. Tailor the internal bore sizes directly to your shafts via our In-House Machining Services.
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