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Mongtec Alternatives to KOMET Group (CERATIZIT) Angle Heads (BT40)

Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies BT40 angle heads on the same open spindle-taper standard KOMET Group uses. KOMET GROUP (headquartered in Besigheim, Germany, 1,500+ employees across 22 subsidiaries in ~50 countries) was acquired by the CERATIZIT Group (Mamer, Luxembourg) in October 2017 and now markets its angle head and tool holder lines — including KAH-series angle heads and SpinTools boring heads — through the combined CERATIZIT/WNT/KOMET organization. This page compares Mongtec's engineering-verified BT40QER11Q90 angle head against KOMET's published BT40-KAH angle head series.

KOMET to Mongtec Cross-Reference Table — BT40 Angle Heads

KOMET column sourced from cuttingtools.ceratizit.com/komet-group/ product listings, accessed 2026-07-09 (KOMET GROUP GmbH, Besigheim, Germany; part of CERATIZIT Group, Mamer, Luxembourg since 2017). 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).

SpecKOMET BT40-KAH Series (published range)Mongtec BT40QER11Q90Compatibility Level
Shank InterfaceBT40BT40Range-to-single-unit comparison – not a part-for-part match. See note below.
Max Speed (by model)BT40-KAH7-170 & BT40-KAH10-195: 5,000 rpm; BT40-KAH20-180: 3,500 rpm8,000 rpm
Output ColletVaries by KAH modelER11
Drive RatioNot published for this page1:1
WeightNot published for this page5.043 kg

Mongtec article numbers by turret interface and output — for part-number cross-reference

Turret interfaceAxial (0°)Radial (90°)
VDI16M0195 (ER16), M1096 (ER11), M3095 (ER11)M2095 (ER11), M4095 (ER11), M5095 (ER16), M6095 (ER11), M7095 (ER11)
VDI20M2006 (ER20), M2106 (ER20), M3106 (ER16), M4106 (ER20)M3006 (ER16), M5006 (ER16), M5106 (ER16), M6106 (ER10), M7106 (ER20)
VDI25M2046 (ER20), M5146 (ER25), M7046 (ER20), M8046 (ER20)M3046 (ER20), M4146 (ER25)
VDI30M0716 (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 →
VDI40M0726 (—), 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 →
VDI50M2036 (ER40), M2136 (ER40), M4036 (ER40), M5236 (ER40), M6036 (ER40)M0136 (ER40), M0236 (ER40), M1136 (ER40), M3136 (ER40), M4136 (ER40), M5036 (ER40), all 11 →
VDI60M1056 (ER50), M7056 (ER50), M8056 (ER50)—
BMT40M1257 (—)—
BMT45M0407 (—), M6007 (ER25), M7001 (ER25), M7014 (ER25), M9407 (ER25)M2007 (ER25), M3307 (ER25), M8007 (ER20), M8307 (—)
BMT55M1817 (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 →
BMT60M4176 (—)—
BMT65M3227 (ER32), M3427 (ER40), M4027 (ER32), M7427 (ER32), M9327 (—)M0227 (ER32), M1227 (ER40), M2427 (—), M2527 (ER32), M5127 (ER32), M6227 (ER32), all 8 →
BMT75M1037 (ER32), M1137 (ER40), M3037 (ER40), M5037 (ER40), M7037 (ER40), M7137 (ER40)—
BMT85M0047 (ER50), M4047 (ER50), M5047 (ER50), M7047 (ER50)—

Send the KOMET Group (CERATIZIT) 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.

Send a KOMET Group (CERATIZIT) part number for cross-reference →

Why Machine Shops Switch: Lead Time, Support, and Cost

Lead Time

KOMET manufactures in Besigheim, Germany, as part of the CERATIZIT Group's 34 production sites worldwide. 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 KOMET's at this time. Request a cross-reference quote below for a project-specific lead time.

Local Support

Mongtec is Taiwan-based, with an engineering-verified BT40 angle head line documented on mongtec-tools.com (accessed 2026-07-09). KOMET is represented globally through the combined CERATIZIT/WNT/KOMET sales organization, with more than 9,000 employees at 34 production sites (lincolninternational.com, accessed 2026-07-09).

Total Cost of Ownership

Both KOMET and Mongtec angle heads mount on the shared BT40 spindle standard. A like-for-like cost comparison depends on the specific unit and has not been performed for this page.

Specification Verification: How We Match Interface Dimensions

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). KOMET's BT40-KAH angle head series spans multiple sizes rated 3,500–5,000 rpm depending on model (industry catalog data, accessed 2026-07-09). A specific KOMET part-number-to-Mongtec cross-reference is confirmed by Mongtec engineering on request.

Which KOMET Products Have a Direct Mongtec Equivalent?

Replacing a KOMET Group (CERATIZIT) angle head

If a KOMET Group (CERATIZIT) 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.

When Mongtec is a sensible alternative to KOMET Group (CERATIZIT) — and when it is not

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.

Cases where a Mongtec unit is a reasonable swap

Cases where you should stay with KOMET Group (CERATIZIT)

What to send Mongtec so the answer is not a guess. To answer a cross-reference question properly Mongtec needs four things: the machine make and model, the turret or spindle interface, the article number of the unit you are replacing (a photo of the nameplate is enough), and the quantity. With those four Mongtec confirms the fit and quotes. Without them any answer is a guess, and in tooling a guess is expensive.

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.

FAQ

Is Mongtec's BT40QER11Q90 interchangeable with a KOMET BT40-KAH angle head?
Both use the BT40 spindle interface. Whether a specific KOMET KAH model is dimensionally interchangeable with the BT40QER11Q90 is confirmed by Mongtec engineering on request.
Is KOMET the same company as CERATIZIT?
KOMET Group was an independent German tool manufacturer until CERATIZIT Group (Luxembourg) acquired it in October 2017. KOMET now operates as part of the combined CERATIZIT/WNT/KOMET organization.
What is the lead time compared to KOMET?
Mongtec does not publish a fixed lead time; it is quoted per order based on interface, quantity, and customization. Request a quote for a project-specific answer.
Does Mongtec offer boring heads like KOMET SpinTools?
No. Mongtec's current catalog covers driven tool holders and angle heads on open machine-tool standards; it does not include modular boring head systems. For that product line, KOMET's catalog has no Mongtec equivalent.
Does Mongtec service existing KOMET angle heads?
Mongtec's Taiwan Service Center lists a range of angle-head brands it repairs and maintains; whether KOMET specifically is covered is confirmed on request.
Request a Cross-Reference Quote