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SKU: HTDPB213M15
HTD Timing Belt Pulleys
21-3M-15 HTD PULLEY PILOT BORE
£3.09
ex. VAT · £3.71 inc. VAT
JS9 Tight Fit Anti-Roll
H7 Precision Transition Fit
ISO 9001 Quality Assured
Technical Specifications
Number of Teeth
21
Pitch (mm)
3
Belt Width (mm)
15
Bore Type
Pilot Bore
Pitch Diameter (mm)
20.05
Outside Diameter (mm)
19.29
Face Width (mm)
20
Min Bore (mm)
6
Max Bore (mm)
15
Weight
0.04kg
Dimensions (L × W × H)
1.9 × 1.9 × 20 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 | HTDPB213M15 | Aroflex part number |
| Number of Teeth | 21 | |
| Pitch (mm) | 3 | |
| Belt Width (mm) | 15 | |
| Bore Type | Pilot Bore | |
| Pitch Diameter (mm) | 20.05 | |
| Outside Diameter (mm) | 19.29 | |
| Face Width (mm) | 20 | |
| Min Bore (mm) | 6 | |
| Max Bore (mm) | 15 | |
| Weight | 0.04 kg | |
| Dimensions | 1.9 × 1.9 × 20 cm | Overall envelope |
| Bore Tolerance | H7 | Precision transition fit |
| Certification | ISO 9001:2015 | Quality assured |
21-3M-15 HTD Pilot Bore Timing Pulley
The 21-3M-15 HTD Timing Pulley ensures continuous anti-slip engagement inside precise positioning gear sets. Spreading mechanical friction evenly across 15mm wide timing belts, its 21 deep curvilinear teeth minimize premature drive failure under variable load 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: 21 heavy-duty precision-machined industrial teeth.
- Pitch & Belt Width: 3mm industrial pitch dimensioned for standard 15mm wide timing belts.
- Bore Status: Unfinished Pilot Bore center layout to facilitate specialized post-purchase reaming.
- Premium Material Properties: Fabricated using premium Aluminum UNI 9006 – T6 (Al) to prevent inertia latency.
- 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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