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SKU: HTDPB568M85
HTD Timing Belt Pulleys
56-8M-85 HTD PULLEY PILOT BORE
£61.60
ex. VAT · £73.92 inc. VAT
JS9 Tight Fit Anti-Roll
H7 Precision Transition Fit
ISO 9001 Quality Assured
Technical Specifications
Number of Teeth
56
Pitch (mm)
8
Belt Width (mm)
85
Bore Type
Pilot Bore (Pre-bored)
Pitch Diameter (mm)
142.6
Outside Diameter (mm)
141.23
Face Width (mm)
95
Stock Pilot Bore (mm)
15
Max Re-Bore Diameter (mm)
65
Weight
10kg
Dimensions (L × W × H)
14.1 × 14.1 × 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 | HTDPB568M85 | Aroflex part number |
| Number of Teeth | 56 | |
| Pitch (mm) | 8 | |
| Belt Width (mm) | 85 | |
| Bore Type | Pilot Bore (Pre-bored) | |
| Pitch Diameter (mm) | 142.6 | |
| Outside Diameter (mm) | 141.23 | |
| Face Width (mm) | 95 | |
| Stock Pilot Bore (mm) | 15 | |
| Max Re-Bore Diameter (mm) | 65 | |
| Weight | 10 kg | |
| Dimensions | 14.1 × 14.1 × 9.5 cm | Overall envelope |
| Bore Tolerance | H7 | Precision transition fit |
| Certification | ISO 9001:2015 | Quality assured |
56-8M-85 HTD Timing Pulley [Pilot Bore Variant]
The 56-8M-85 HTD Timing Pulley offers high power distribution capacity across synchronous drivetrains. Meshing smoothly with 85mm wide timing belts via its 56 curvilinear teeth, it keeps the system tracking accurately without slipping. Arriving with an unmachined center hub pilot bore, it serves as an adaptable component for custom industrial machinery rebuilds.
Product Features & Specifications
- Tooth Configuration: 56 precision-machined synchronous HTD teeth.
- Pitch & Belt Width: 8mm high-torque drive profile engineered for 85mm wide timing belts.
- Bore Status: Unmachined Pilot Bore center hub layout, letting you drill to unique millimetric constraints.
- Industrial Build Quality: Crafted from premium high-strength Steel (St) or 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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