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SKU: HTDPB728M20
HTD Timing Belt Pulleys
72-8M-20 HTD PULLEY PILOT BORE
£49.02
ex. VAT · £58.82 inc. VAT
JS9 Tight Fit Anti-Roll
H7 Precision Transition Fit
ISO 9001 Quality Assured
Technical Specifications
Number of Teeth
72
Pitch (mm)
8
Belt Width (mm)
20
Bore Type
Pilot Bore
Pitch Diameter (mm)
183.35
Outside Diameter (mm)
181.98
Face Width (mm)
28
Min Bore (mm)
15
Max Bore (mm)
90
Weight
3.5kg
Dimensions (L × W × H)
18.2 × 18.2 × 2.8 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 | HTDPB728M20 | Aroflex part number |
| Number of Teeth | 72 | |
| Pitch (mm) | 8 | |
| Belt Width (mm) | 20 | |
| Bore Type | Pilot Bore | |
| Pitch Diameter (mm) | 183.35 | |
| Outside Diameter (mm) | 181.98 | |
| Face Width (mm) | 28 | |
| Min Bore (mm) | 15 | |
| Max Bore (mm) | 90 | |
| Weight | 3.5 kg | |
| Dimensions | 18.2 × 18.2 × 2.8 cm | Overall envelope |
| Bore Tolerance | H7 | Precision transition fit |
| Certification | ISO 9001:2015 | Quality assured |
72-8M-20 HTD Pilot Bore Timing Pulley
The large-format 72-8M-20 HTD Pilot Bore Timing Pulley delivers high mechanical reduction ratios and stable synchronous distribution. Designed to drive 20mm wide timing belts across its 72 deep curvilinear teeth, it minimizes friction and optimizes load transfer across massive setups. Provided with a plain stock pilot bore, it is ideal for custom boring and precision keyway cutting.
Product Features & Specifications
- Tooth Configuration: 72 heavy-duty synchronous HTD teeth.
- Pitch & Belt Width: 8mm heavy industrial pitch designed for 20mm wide timing belts.
- Bore Status: Blank stock hub with a minimal guide hole to facilitate clean lathe centering.
- Industrial Materials: Fabricated using robust Cast Iron (GG) or premium Steel (St).
- 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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