Type B arrangement
The source identifies this family as a 90 degree square-cutter boring holder.
Catalog reference view. final supplied configuration confirmed by quotation.
BT-BSB
BT Type B 90 Degree Boring Holders
Overview
BT square-cutter rough boring holders with a 90 degree Type B arrangement.
AvailabilityConfirm before order
Lead timeQuote based
Product details
BT Type B boring holders use the catalog's 90 degree square-cutter arrangement for rough boring. BT40 and BT50 versions cover different bar sizes, lengths and boring ranges. Choose the target hole and required reach first, then verify the corresponding holder row, cutter arrangement and available clearance on the machine setup.
Range per holder
Use the boring range belonging to the selected model, not the entire series maximum.
Reach and bar size
Review L1 and bar diameter together against the hole depth and access requirement.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Interface
- BT40, BT50
- Boring range
- 25-150 mm
- Style
- Type B, 90 degree
6 catalog rows
| Ordering family | L1 | Bar d | Boring range d1 |
|---|---|---|---|
| BT40-BSB25/38/50/62 | 120/150/165/180 | 20/30/40/50 | 25-115 |
| BT50-BSB25/38 | 135/180 | 20/30 | 25-70 |
| BT50-BSB50 | 180/240 | 40 | 50-90 |
| BT50-BSB62 | 195/270 | 50 | 62-115 |
| BT50-BSB72 | 195/285 | 60 | 72-135 |
| BT50-BSB90 | 210/300 | 75 | 90-150 |
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.
- BSB model and boring range identified
- Bar and spindle taper protected separately
- Ordered cutter-clamping parts counted
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.
Rough hole enlargement
Preparing an existing hole for a later finishing operation.
Large-bore preparation
Selecting a listed bar size for a planned boring diameter and depth.
BT production tooling
Organizing boring holders for a confirmed BT40 or BT50 machine.
Related product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
BT-BSA
BT Type A 45 Degree Boring Holders
Models and specifications
25-100 MM SERIES
Shell Carbide Reamers
Models and specifications
CARBIDE COUNTERBORE SERIES
Carbide Counterbores
Models and specificationsDoes every Type B holder cover 25–150 mm?
No. That is the overall series span. Each ordering row has a narrower stated boring range.
Is this a fine-boring head with a published adjustment increment?
The catalog describes rough boring and does not provide a fine-adjustment increment or finish-tolerance claim.
How does it differ from Type A?
This family is labeled 90 degree Type B; Type A is labeled 45 degree. Compare cutter arrangement and geometry before selection.
Is the square cutter supplied with the holder?
Package contents are not established by this table. State the cutter and clamping parts needed in the inquiry.