Inch-based pilots
The catalog records pilot values such as 25.4 and 31.75 mm for inch mounting requirements.
Catalog reference view. final supplied configuration confirmed by quotation.
BT-FMA
BT FMA Face Mill Arbors
Overview
Inch pilot BT face mill arbors for common face mill mounting sizes.
AvailabilityConfirm before order
Lead timeQuote based
Product details
BT FMA face mill arbors address cutters with inch-based mounting pilots while retaining the listed BT spindle connections. Pilot values are shown in millimeters in the table, so keep the original inch mounting requirement visible in the inquiry. Select the pilot, arbor length and cutter-side fastening details together rather than by the BT interface alone.
Model-specific options
BT30, BT40 and BT50 rows contain different pilot and L1 combinations.
Assembly confirmation
A matching pilot is only one check; verify drive features, fixing hardware and clearance.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Interface
- BT30, BT40, BT50
- Pilot diameter
- 25.4-50.8 mm
- Gauge length
- 45-150 mm
7 catalog rows
| Ordering family | Pilot d | L1 options | D |
|---|---|---|---|
| BT30-FMA25.4 | 25.4 | 45/60 | 50 |
| BT30-FMA31.75 | 31.75 | 45 | 60 |
| BT40-FMA25.4 | 25.4 | 45/60/90/105 | 50 |
| BT40-FMA31.75 | 31.75 | 45/75/90 | 60 |
| BT40-FMA38.1/50.8 | 38.1/50.8 | 60 | 75/98 |
| BT50-FMA25.4/31.75 | 25.4/31.75 | 45/75/90/105/150 | 50/60 |
| BT50-FMA38.1/50.8/47.62 | 38.1/50.8/47.62 | 45/75 | 80/98/128.75 |
No matching model in this table. Try a shorter code or send us your drawing.
Ranges and slash-separated values describe catalog families, not every possible combination. Confirm the complete model and drawing before ordering.
Shipping photos & packing
Agree the packing method and photo requirements when confirming your order.
Order-specific photo confirmation
Verified dispatch photos for this series have not been uploaded. Request photographs of your selected model, protective packing and shipping label when confirming your order.
Discuss packing requirementsPhotos to confirm before dispatch
Use this checklist to agree what should be documented for your selected model.
- Inch-based pilot identified without rounded substitution
- Pilot and cutter seating face protected
- Fixing hardware and model quantity checked
Stock, dispatch date and shipping method are confirmed with the quotation. Website images are not live inventory evidence.
Application scenarios
Typical selection contexts for this series, not customer project claims. Confirm machine compatibility and cutting conditions for your setup.
Inch-bore face mills
Selecting an arbor for a cutter with a confirmed inch mounting specification.
BT tooling replacement
Matching an existing face mill setup by complete arbor code and drawing.
Mixed-standard workshops
Separating inch-based cutter interfaces from metric FMB arbor selections.
Related product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
BT-FMB
BT FMB Face Mill Arbors
Models and specifications
SHELL MILL SERIES
Shell Carbide Milling Cutters
Models and specifications
BT-SCA
BT SCA Side Cutter Adapters
Models and specificationsWhy are inch-based pilots displayed as millimeters?
The company table lists the dimensions that way. Retain the original cutter bore designation in your inquiry to avoid rounding ambiguity.
Can a 25.4 mm pilot be replaced by 25 mm?
Do not substitute a rounded nominal size. The mounting bore and pilot must be confirmed as a matched interface.
Does choosing BT40 fully identify the arbor?
No. Pilot, length, drive arrangement and fixing details are also required.
Is the catalog's 47.62 mm pilot ready for automatic ordering?
Confirm that source dimension and its corresponding cutter drawing before quotation; do not silently round or reinterpret it.