Name: BT Type B 90 Degree Boring Holders
Brand: FuRui Tooling

Product description

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.

Type B arrangement

The source identifies this family as a 90 degree square-cutter boring holder.

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.

Selecting BT50-BSB50 for a boring inquiry

The BT50-BSB50 row lists a 50–90 mm boring range, a 40 mm bar diameter and L1 options of 180 or 240 mm. The bar diameter is not the hole diameter, and L1 should not be treated as the available cutting depth. Check the drawing reference faces, cutter position and workpiece clearance before choosing the length.

Request a BT50-BSB50 drawing and quotation. State the starting and finished bore diameters, required depth, workpiece material and preferred L1 so the inquiry identifies one configuration.

Check the cutter arrangement before ordering

The BSB series uses a 90-degree cutter arrangement. If you are matching a 45-degree setup, compare the BSA Type A rough boring holders instead. A matching BT40 or BT50 interface alone does not confirm that the cutting assembly will fit the same job.

Include the square-cutter dimensions, machine interface, quantity and destination with your inquiry. Ask for the selected model drawing and confirmation of the supplied cutter and fastening hardware; the grouped catalog ranges do not establish the contents of an individual quotation.

Specifications & model range

Dimensions are in millimeters. Grouped BT40-BSB25/38/50/62 and BT50-BSB25/38 entries contain separate model-specific boring ranges, not one universal range. Confirm the selected model, L1, bar diameter and cutter arrangement on the final drawing.

Interface: BT40, BT50
Boring range: 25-150 mm
Style: Type B, 90 degree

Select an underlined catalog reference to include that row in your inquiry.

BT Type B 90 Degree Boring Holders catalog specifications
Ordering family	L1	Bar d	Catalog boring ranges d1
BT40-BSB25/38/50/62	120/150/165/180	20/30/40/50	25-52 / 38-70 / 50-90 / 62-115
BT50-BSB25/38	135/180	20/30	25-52 / 38-70
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

Ranges and slash-separated values describe catalog families, not every possible combination. Confirm the complete model and drawing before ordering.

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.

Inspection & order review

Specify the dimensions, tolerances and records your order requires. Acceptance criteria must be agreed for the selected model.

Catalog fields to check

Ordering family
L1
Bar d
Catalog boring ranges d1

Check the drawing reference faces and units. A catalog size alone does not define a tolerance or an inspection method.

Records to request

List any required dimensional report, material document or model identification photograph in your inquiry. Confirm availability and scope in the quotation.

For a drawing-based part, include the drawing revision and identify the critical dimensions. Website photographs are not inspection reports.

Packaging & delivery

Agree the packing method and photo requirements when confirming your order.

Order-specific photo confirmation

No verified shipment photographs for this series are currently published. Include selected-model, protective-packing and outer-label photos in your order requirements.

Discuss packing requirements

Photos 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.

Technical resources

Product specifications

Keep a copy of the current series information for comparison. Confirm the final model and drawing before placing an order.

View specifications

Compare tool-holder connections

Read interface names and ordering codes before choosing a holder.

Read the guide

Related selection information

Browse the existing tooling guides and compare product families before selecting a model.

Browse technical resources

Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.

View the full category

Product FAQ

Selection questions for BT Type B 90 Degree Boring Holders.

Request a quote

Does 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.

BT Type B 90 Degree Boring Holders

Overview