BT40QAER25MQ100 is a right-angle machining head from Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan. It turns the spindle output through 90° so a machining centre can cut side-facing features without re-fixturing the part. The figures below are the values Mongtec publishes for this model.
| Driving shank | BT40 |
|---|---|
| Max. RPM | 6000 RPM |
| Output rotation | CW-CW |
| Ratio of transmission | 1:1 |
| Through the diameter | D95 |
| Chucking range | D1-D16 |
| Tapping | M6-M14 |
| Torque | 46 Nm |
| Weight | 5.566 kg |
| Body material | aviation aluminum |
| Minimum pass allowed | Phi D95 |
| Availability | Confirmed at quotation |
| Custom order | Available — specified to the operation and the machine |
The drawing above is the published catalogue drawing. What Mongtec engineering confirms for you is the fit against your actual spindle taper, pull stud and stop arrangement — and the final article number. Send the machine model; the check is free.
Check BT40QAER25MQ100 against my machine →Three things decide whether an angle head works on your machine, and none of them are visible on a spec sheet:
| 1. Spindle interface and pull stud | The taper and the pull stud must both match. A BT40 taper with the wrong pull stud thread will not clamp. |
|---|---|
| 2. Stop block or stop pin | The head has to be held against spindle torque. The stop arrangement differs between machine builders and is confirmed against your machine before quoting. |
| 3. Clearance at the cutting position | The head body must clear the part, the fixture and the machine at the actual cutting position — not only at the tool change position. |
| Model | Driving shank | Max. RPM | Chucking range | Torque | Through dia. |
|---|---|---|---|---|---|
| BT40QDC5MQ50 | BT40 | 6000 RPM | D1-D5 | 5.6 Nm | D40 |
| BT40QDC6/Square | BT40 | 6000 RPM | D1-D6 | 10.8 Nm | D35 |
| BT40QDC6Q66 | BT40 | 6000 RPM | D1-D6 | 10.8 Nm | D35 |
| BT40QDC7Q18 | BT40 | 6000 RPM | D1-D7 | 10.8 Nm | D50 |
| BT40QDC7Q35 | BT40 | 6000 RPM | D1-D7 | 10.8 Nm | D50 |
| BT40QDC7Q52 | BT40 | 6000 RPM | D1-D7 | 10.8 Nm | D50 |
| BT40QDC8QD45 | BT40 | 6000 RPM | D4-D10 | 23 Nm | D45 |
| BT40QDC10 | BT40 | 6000 RPM | D4-D10 | 23 Nm | D51 |
| BT40QER11Q90 | BT40 | 8000 RPM | D1-D7 | 10.8 Nm | D75 |
| BT40QER11Q140 | BT40 | 8000 RPM | D1-D7 | 10.8 Nm | D75 |
| BT40QER11Q190 | BT40 | 8000 RPM | D1-D7 | 10.8 Nm | D75 |
| BT40QER16Q66 | BT40 | 8000 RPM | D1-D10 | 18 Nm | D100 |
Every model in this catalogue is also available as a custom build. Reach, nose profile, output interface, angle, coolant routing and the stop arrangement can all be changed to suit the operation and the machine.
Already using another brand? Send us the drawing or the article number of the head you run today and Mongtec will convert it to an equivalent Mongtec head — same mounting, same reach, same output. You do not need to re-work the fixture or the programme.