SCHUNK column sourced from schunk.com/us/en/tool-clamping-technology/toolholders/tendo-hydraulic-expansion-toolholder/ product listings, accessed 2026-07-09 (SCHUNK GmbH & Co. KG, Lauffen/Neckar, Germany). Mongtec column sourced from Mongtec internal engineering spec sheet for BT40QER11Q90, verified 2026 (mongtec-tools.com/en-US/plist1-angle-heads, accessed 2026-07-09).
| Spec | SCHUNK TENDO BT40 Hydraulic Toolholder | Mongtec BT40QER11Q90 | Compatibility Level |
|---|---|---|---|
| Shank Interface | BT40 (JIS-BT40), plus CAT40 and other variants | BT40 | Shared shank standard only – product categories differ (hydraulic toolholder vs. angle head). Not a part-for-part match. |
| Product Type | Straight-shank hydraulic expansion toolholder for machining-center spindle | 90° angle head for BT40 spindle | |
| Runout Accuracy | <0.003 mm at 2.5×D | Not published for this page | |
| Balance Grade | G2.5 @ 25,000 rpm (or Umax <1 gmm) | Not applicable (8,000 rpm max) | |
| Output Collet | Not applicable (hydraulic bore clamping, not collet-based) | ER11 |
| Turret interface | Axial (0°) | Radial (90°) |
|---|---|---|
| VDI16 | M0195 (ER16), M1096 (ER11), M3095 (ER11) | M2095 (ER11), M4095 (ER11), M5095 (ER16), M6095 (ER11), M7095 (ER11) |
| VDI20 | M2006 (ER20), M2106 (ER20), M3106 (ER16), M4106 (ER20) | M3006 (ER16), M5006 (ER16), M5106 (ER16), M6106 (ER10), M7106 (ER20) |
| VDI25 | M2046 (ER20), M5146 (ER25), M7046 (ER20), M8046 (ER20) | M3046 (ER20), M4146 (ER25) |
| VDI30 | M0716 (ER25), M1116 (ER25), M1816 (ER25), M2016 (ER20), M2026 (ER32), M2116 (ER25), all 30 → | M0116 (ER25), M0316 (ER25), M0416 (ER25), M0816 (ER25), M1416 (ER25), M1716 (ER25), all 28 → |
| VDI40 | M0726 (—), M0926 (ER32), M1126 (ER32), M1826 (ER32), M2326 (ER32), M2426 (ER32), all 36 → | M0126 (ER32), M0166 (ER32), M0326 (ER32), M0426 (ER32), M0526 (ER32), M0626 (ER25), all 37 → |
| VDI50 | M2036 (ER40), M2136 (ER40), M4036 (ER40), M5236 (ER40), M6036 (ER40) | M0136 (ER40), M0236 (ER40), M1136 (ER40), M3136 (ER40), M4136 (ER40), M5036 (ER40), all 11 → |
| VDI60 | M1056 (ER50), M7056 (ER50), M8056 (ER50) | — |
| BMT40 | M1257 (—) | — |
| BMT45 | M0407 (—), M6007 (ER25), M7001 (ER25), M7014 (ER25), M9407 (ER25) | M2007 (ER25), M3307 (ER25), M8007 (ER20), M8307 (—) |
| BMT55 | M1817 (ER25), M4117 (ER32), M6117 (ER25), M6317 (ER25), M7317 (ER32), M7517 (—), all 7 → | M0317 (ER25), M0717 (ER32), M0817 (—), M1117 (ER25), M1317 (ER32), M2317 (ER25), all 14 → |
| BMT60 | M4176 (—) | — |
| BMT65 | M3227 (ER32), M3427 (ER40), M4027 (ER32), M7427 (ER32), M9327 (—) | M0227 (ER32), M1227 (ER40), M2427 (—), M2527 (ER32), M5127 (ER32), M6227 (ER32), all 8 → |
| BMT75 | M1037 (ER32), M1137 (ER40), M3037 (ER40), M5037 (ER40), M7037 (ER40), M7137 (ER40) | — |
| BMT85 | M0047 (ER50), M4047 (ER50), M5047 (ER50), M7047 (ER50) | — |
Send the SCHUNK BT-Taper part number together with your machine model and turret — Mongtec engineering maps it to the matching Mongtec article number at quotation. The check is free.
SCHUNK manufactures at 9 plants across Germany and internationally, headquartered in Lauffen/Neckar. Mongtec ships from Taiwan and quotes lead time per order after reviewing the specific spindle interface and any customization — there is no single published lead-time figure to compare against SCHUNK's at this time. Request a cross-reference quote below for a project-specific lead time.
Mongtec is Taiwan-based, with an engineering-verified BT40 angle head line documented on mongtec-tools.com (accessed 2026-07-09). SCHUNK operates 34 directly owned subsidiaries and distribution partners in more than 50 countries, with ~3,500 employees worldwide (schunk.com, accessed 2026-07-09).
Because SCHUNK's BT40 hydraulic toolholders and Mongtec's BT40QER11Q90 angle head serve different machining functions, a like-for-like cost comparison is not meaningful for this page. Shops evaluating both would typically use SCHUNK-type toolholders and Mongtec-type angle heads together, not as substitutes for each other.
Mongtec's BT40QER11Q90 angle head is an engineering-verified unit: BT40 shank, max 8,000 rpm, 1:1 drive ratio, CW-CW rotation, ER11 collet, D1-D7 chucking range, M5-M6 tapping capacity, 10.8 Nm torque, 5.043 kg weight (Mongtec internal engineering spec, verified 2026). SCHUNK's TENDO hydraulic expansion toolholder line for BT40 delivers runout and repeat accuracy of less than 0.003 mm at 2.5×D, balanced to G2.5 @ 25,000 rpm, across variants including TENDO Platinum, TENDO Slim 4ax, and TENDO E Compact (schunk.com, accessed 2026-07-09). Both product lines share the BT40 spindle standard; a specific fit-and-function verification for a combined tooling setup is confirmed by Mongtec engineering on request.
If a SCHUNK BT-Taper unit on your machine is worn, damaged or discontinued, you do not need the original article number to replace it. Send the model number, the name plate photo, or the drawing of the angle head you run today — Mongtec engineering cross-references the mounting, coupling and output geometry and quotes a suitable Mongtec article, stating clearly which dimensions were confirmed. Repair of the existing unit is sometimes the better answer; where we see that, we say so.
Mongtec publishes this comparison so buyers can judge the swap themselves. It is not a claim that one brand is better than the other — the two are different companies with different ranges, and the right choice depends on the machine and the job.
Send it to info@mongtec.com or use the enquiry form. A drawing or a photo of the unit on the turret speeds this up; neither is required to start.