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Mongtec Alternatives to Showa Tool Co., Ltd. Angle Heads (BT40)

Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies BT40 angle heads on the same open spindle-taper standard Showa Tool uses. Showa Tool Co., Ltd. (founded 1973, Japan) manufactures Micron Chuck high-precision collet chucks (rated to 1 µm runout accuracy by its proprietary mechanism), angle head tool holders, and BT-series tooling, fully manufactured in Japan under strict quality controls, with distribution through partners including Yamazen. This page compares Mongtec's engineering-verified BT40QER11Q90 angle head against Showa Tool's published BT series angle head and chuck range.

Showa Tool to Mongtec Cross-Reference Table — BT40 Angle Heads

Showa Tool column sourced from showatool.com/english/company/pdf/showa_tool_general_catalog-2.bt.pdf and showatool.com/english/company/, accessed 2026-07-09 (Showa Tool Co., Ltd., Japan). 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).

SpecShowa Tool BT Series (published range)Mongtec BT40QER11Q90Compatibility Level
Shank InterfaceBT30–BT50 range (BT40 relevant)BT40Range-to-single-unit comparison – not a part-for-part match. See note below.
Max Speed (collet chuck line)Up to 25,000 rpm (BT40 collet chucks, general catalog)8,000 rpm
Output ColletCS32-D (SHORT) spring collets and others, compatible with BT40 chucksER11
Runout Accuracy1 µm (Micron Chuck line, per manufacturer claim)Not published for this page
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 Showa 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 Showa part number for cross-reference →

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

Lead Time

Showa Tool manufactures entirely in Japan under strict in-house quality controls. 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 Showa Tool'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). Showa Tool distributes internationally through regional partners including Yamazen Mexicana and others across Europe, Asia, and Oceania (showatool.com, accessed 2026-07-09).

Total Cost of Ownership

Both Showa Tool 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). Showa Tool's BT series spans collet chucks (rated up to 25,000 rpm and 1 µm runout on its Micron Chuck line) and angle head tool holders across the BT30–BT50 taper range (showatool.com, accessed 2026-07-09). A specific Showa Tool angle-head-model-to-Mongtec cross-reference is confirmed by Mongtec engineering on request.

Which Showa Tool Products Have a Direct Mongtec Equivalent?

Replacing a Showa angle head

If a Showa 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 Showa Tool — 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 Showa Tool

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 Showa Tool angle head?
Both use the BT40 spindle interface. Whether a specific Showa Tool angle head model is dimensionally interchangeable with the BT40QER11Q90 is confirmed by Mongtec engineering on request.
What is the lead time compared to Showa Tool?
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 high-precision collet chucks like Showa Tool's Micron Chuck line?
No. Mongtec's current catalog covers driven tool holders and angle heads on open machine-tool standards; it does not include standalone precision collet chucks. For that product line, Showa Tool's catalog has no Mongtec equivalent.
Does Mongtec offer BT30 or BT50 angle heads to match Showa Tool's full range?
Mongtec's published angle head line is confirmed for BT40; availability in BT30 or BT50 to match Showa Tool's broader range is confirmed on request.
Does Mongtec service existing Showa Tool angle heads?
Mongtec's Taiwan Service Center lists a range of angle-head brands it repairs and maintains; whether Showa Tool specifically is covered is confirmed on request.
Request a Cross-Reference Quote