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Workshop Add Bore & Keyway Service

+ £0.00 (£0.00 each)

Order total (product + machining): £2.42

Price varies by bore size and Bore Qty (per machined hub).

Bore size (Hub 1)

Bore size (Hub 2)

Bore Qty (machined items)

Max equals product quantity.

Please Confirm any Additional Machining Details Required (optional)

Keyway size (optional)

Price Breakdown

Up to 25mm (0.984") – (£15)
Up to 40mm (1.575") – (£20)
Up to 60mm (2.362") – (£30)
Over 60mm (2.362"+) – (£45)

Quantity Discount Breakdown

1 to 5 items: No discount
6 to 9 items: 10% off
10 to 19 items: 15% off
20 to 49 items: 20% off
50 to 99 items: 25% off
100+ items: 30% off

SKU: HTDPB125M25 HTD Timing Belt Pulleys

12-5M-25 HTD PULLEY PILOT BORE

Name: 12-5M-25 HTD Pulley PILOT BORE | UK Stock | Arrow Engineering
SKU: HTDPB125M25
Price: 2.42 GBP
Availability: InStock

£2.42

ex. VAT · £2.90 inc. VAT

JS9 Tight Fit Anti-Roll H7 Precision Transition Fit ISO 9001 Quality Assured

In Stock — Dispatches within 24 hours. Bulk orders (10+) available — call for lead time.

Technical Specifications

Number of Teeth

Pitch (mm)

Belt Width (mm)

Bore Type

Pilot Bore

Pitch Diameter (mm)

19.1

Outside Diameter (mm)

17.96

Face Width (mm)

Min Bore (mm)

Max Bore (mm)

Weight

0.05kg

Standards & Fit

JS9

JS9 Keyway Tight fit anti-roll standard

Precision Transition Fit Precision bore fit

ISO

ISO 9001:2015 Quality Assured

Parameter	Value	Notes
SKU	HTDPB125M25	Aroflex part number
Number of Teeth	12
Pitch (mm)	5
Belt Width (mm)	25
Bore Type	Pilot Bore
Pitch Diameter (mm)	19.1
Outside Diameter (mm)	17.96
Face Width (mm)	32
Min Bore (mm)	6
Max Bore (mm)	15
Weight	0.05 kg
Bore Tolerance	H7	Precision transition fit
Certification	ISO 9001:2015	Quality assured

12-5M-25 HTD Pilot Bore Timing Pulley

The ultra-compact 12-5M-25 HTD Timing Pulley supplies compact automation frameworks with maximum customization versatility inside microscopic installation boundaries. Utilizing a reliable 5mm curvilinear pitch to match wide-format 25mm synchronous timing belts, its flanged layout completely removes belt walk or slip thresholds during operation. Provided as a blank stock pilot bore, it serves as an adaptable component for custom machine shop alterations.

Product Features & Specifications

Tooth Configuration: 12 heavy-duty precision-machined HTD teeth.
Pitch & Belt Width: 5mm tooth-to-tooth pitch profile optimized for wider 25mm timing belts.
Bore Status: Unbored stock hub with a minimal guide hole to facilitate clean lathe centering.
Industrial Construction: Robustly formed using premium Aluminum UNI 9006 – T6 (Al) or high-grade solid 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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      EXCELLENT  
   Based on 15 reviews 
    
 
 
 
   
 
 
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   H Cunningham 
 18 February 2025
 
 
 Trustindex verifies that the original source of the review is Google. Very helpful, friendly staff.
  
 
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   P Wâtëŕs 
 16 August 2023
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service and customer support.  Professional staff. And really informative.
  
 
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   T hall 
 29 November 2021
 
 
 Trustindex verifies that the original source of the review is Google. Very helpful company....above 5 star rated.
  
 
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   B Kennedy 
 16 November 2020
 
 
 Trustindex verifies that the original source of the review is Google. Very very helpful a pleasure to deal with you
  
 
      Posted on Google  
   
   D Birch 
 25 October 2020
 
 
 Trustindex verifies that the original source of the review is Google. Everytime ive been here they have had what i needed, and good prices, so all good with me