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SKU: HTDPB288M20
HTD Timing Belt Pulleys
28-8M-20 HTD PULLEY PILOT BORE
£10.69
ex. VAT · £12.83 inc. VAT
JS9 Tight Fit Anti-Roll
H7 Precision Transition Fit
ISO 9001 Quality Assured
Technical Specifications
Number of Teeth
28
Pitch (mm)
8
Belt Width (mm)
20
Bore Type
Pilot Bore
Pitch Diameter (mm)
71.3
Outside Diameter (mm)
69.93
Face Width (mm)
28
Min Bore (mm)
12
Max Bore (mm)
35
Weight
0.6kg
Dimensions (L × W × H)
7 × 7 × 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 | HTDPB288M20 | Aroflex part number |
| Number of Teeth | 28 | |
| Pitch (mm) | 8 | |
| Belt Width (mm) | 20 | |
| Bore Type | Pilot Bore | |
| Pitch Diameter (mm) | 71.3 | |
| Outside Diameter (mm) | 69.93 | |
| Face Width (mm) | 28 | |
| Min Bore (mm) | 12 | |
| Max Bore (mm) | 35 | |
| Weight | 0.6 kg | |
| Dimensions | 7 × 7 × 2.8 cm | Overall envelope |
| Bore Tolerance | H7 | Precision transition fit |
| Certification | ISO 9001:2015 | Quality assured |
28-8M-20 HTD Pilot Bore Timing Pulley
The 28-8M-20 HTD Timing Pulley ensures continuous anti-slip mechanical engagement inside high-load machinery. Meshing smoothly with 20mm wide timing belts via its 28 deep curvilinear teeth, it prevents positive drive tooth shear under sudden stop-start forces. It arrives as an unbored blank with a stock centering guide hole, ideal for custom-boring unique millimetric shaft clearances.
Product Features & Specifications
- Tooth Configuration: 28 heavy-duty precision-machined industrial teeth.
- Pitch & Belt Width: 8mm industrial pitch configuration designed for standard 20mm wide timing belts.
- Bore Status: Unfinished Pilot Bore center layout to facilitate specialized post-purchase reaming.
- Industrial Build Quality: Crafted from structural grade solid Steel (St) or rugged 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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