Changlong spindle and motor spindle repair
Brochexpress is an independent workshop specialising in the repair, maintenance and diagnostics of Changlong spindles and motor spindles — the Chinese manufacturer from Jiangsu specialising in air-cooled and water-cooled high-speed spindle motors under the Changsheng-GDZ brand.
Changlong, a Chinese manufacturer of high-speed spindle motors
TLDR: Changzhou Changlong Motor Co., Ltd, formerly Changzhou LINNAN Special Motor Factory, based in Jiangsu province in China, is a manufacturer of high-speed spindle motors, with a range covering water-cooled spindles, air-cooled spindles and automatic tool change (ATC) spindles.
Changzhou Changlong Motor Co., Ltd, established in its current form in 2013 but descended from Changzhou LINNAN Special Motor Factory, is a technological and professional manufacturer of high-speed spindle motors, with more than 20 years of claimed production experience. The company has developed several ranges of high-technology motor spindles: water-cooled router spindles, air-cooled spindles, as well as automatic tool change spindles and side-sealed spindles.
The Changsheng brand high-speed motor spindles, GDZ series, have gained recognition for their high accuracy, high rigidity, high efficiency, strong power output and low noise level, with applications widely used in cylindrical grinding, precision engraving, CNC drilling and milling. To meet the requirements of its most demanding customers, the company has also invested in additional facilities specialising in water-cooled ATC spindles, high-power grinding spindles and belt-driven spindles. On this kind of equipment, often fitted to engraving and cutting machines, a Changlong spindle out of service brings the whole machine to a stop — and the lead time to source a replacement far exceeds that of an overhaul.
A range of air-cooled and water-cooled Changlong motor spindles, from 1.2 to 7.5 kW
TLDR: Changlong motor spindles cover a wide power range, from 1.2 to 7.5 kW depending on the model, with rotation speeds reaching up to 60,000 rpm on the fastest configurations, in ER11, ER20, ER40 or BT30 interfaces depending on the application (wood, metal, stone, engraving).
Changlong motor spindles cover a wide range of power ratings and speeds according to the target application: from compact 1.2 kW models at 24,000-36,000 rpm with an ER11 interface, water-cooled, for precision metal work (grinding, deburring), up to more powerful 7.5 kW models with an ER40 interface, also water-cooled, for stone and metal work in high-precision grinding and engraving.
On models dedicated to woodworking and engraving, water-cooled spindles of 1.5 to 4.5 kW cover a range of 18,000 to 24,000 rpm, with high-speed three-phase asynchronous versions. On automatic tool change (ATC) configurations, a 5.5 kW model with a BT30 interface reaches 18,000 rpm at 600 Hz, dedicated to CNC routers. On the most demanding grinding applications, water-cooled spindles can reach 12,000 to 60,000 rpm depending on the configuration. The cooling circuit is an integral part of our diagnostics: on these spindles, a sealing fault or insufficient flow is the leading cause of bearing degradation.
Changlong spindles and motor spindles covered (non-exhaustive list)
- Water-cooled motor spindles, ER11 interface, up to 36,000 rpm
- Water-cooled motor spindles, ER40 interface, up to 7.5 kW
- Automatic tool change (ATC) motor spindles, BT30 interface, up to 18,000 rpm
- High-speed grinding motor spindles, up to 60,000 rpm
- Side-sealed motor spindles and belt-driven spindles, Changsheng-GDZ brand
Interfaces and specifications
The Changlong spindles and motor spindles we repair come with ER11, ER20, ER40 and BT30 interfaces, with power ratings of 1.2 to 7.5 kW and rotation speeds reaching up to 60,000 rpm depending on the model — exact specifications to be confirmed on quotation according to the reference of your spindle.
Our expertise on your Changlong spindles and motor spindles
TLDR: Brochexpress works across the entire life cycle of your Changlong spindles, with the same rigour as for the other brands in our portfolio.
On-site customer service
- Diagnostics and service directly on your machine, in your production workshop, to limit downtime on your engraving or machining line
Full diagnostics
- Inspection of clearances, balancing, bearing condition, sealing and the cooling circuit, with a detailed technical report
Preventive and corrective maintenance
- Maintenance programme tailored to the production rates of engraving and grinding work, together with corrective action in the event of a breakdown
Overhaul and refurbishment
- Grinding, bearing replacement, sealing refurbishment and rotation testing in the workshop, restoring the manufacturer's original tolerances
Why choose Brochexpress for your Changlong spindles
- An independent workshop, with no capital ties to manufacturers, guaranteeing an objective diagnosis
- Overhaul rather than replacement, without waiting for a supply from outside Europe
- Two service sites: Beaurepaire (France) and Lussery-Villars (Switzerland)
- Support from the first intervention through to return to production
Turnaround and warranty
- On-site service within 48h
- Workshop repair: around 20 working days depending on parts availability
- 12-month warranty on all our repairs
Frequently asked questions
Do you repair water-cooled Changlong motor spindles with ER11 to ER40 interfaces?
Yes, we work on these spindles whatever the installed power rating (1.2 to 7.5 kW) and cooling method.
Do you work on automatic tool change (ATC) spindles with a BT30 interface?
Yes, we diagnose and repair these spindles, whatever the tool change configuration.
What is the average turnaround for a full overhaul?
Allow around 20 working days in the workshop, depending on the condition of the spindle and the availability of parts (bearings, seals, specific components).
Do you work on very high speed grinding spindles, up to 60,000 rpm?
Yes, we diagnose and repair these spindles, taking account of their specific balancing requirements at very high speed.
Do you offer a preventive maintenance contract for a fleet of Changlong motor spindles?
Yes, we set up preventive maintenance programmes tailored to your production rate.
Are you an official Changlong partner?
No. Brochexpress is an independent repair and maintenance workshop. We are neither affiliated with, nor a partner of, nor an authorised distributor of Changzhou Changlong Motor Co., Ltd. Our business covers independent maintenance of industrial equipment, permitted under the principle of referential trademark use (EU Trademark Directive 2015/2436 / French Intellectual Property Code, art. L.713-6).
A reliable partner for your industrial performance
Whether it is an emergency on-site intervention, a full workshop overhaul or a preventive maintenance programme, Brochexpress brings its expertise to your production. As an independent workshop, we work across all Changlong spindles and motor spindles — air-cooled and water-cooled, from ER11 to BT30 — with the responsiveness and rigour demanded by the most exacting industrial environments: engraving, grinding and precision machining.
Our teams are at your disposal from our sites in Beaurepaire (France) and Lussery-Villars (Switzerland) for a study of your needs, a diagnosis or a personalised quotation.
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Changlong® and Changsheng® are registered trademarks of Changzhou Changlong Motor Co., Ltd. Brochexpress is neither affiliated with, nor a partner of, nor an authorised distributor of Changzhou Changlong Motor Co., Ltd. Our business covers independent repair and maintenance of industrial equipment, permitted under the principle of referential trademark use (EU Trademark Directive 2015/2436 / French Intellectual Property Code, art. L.713-6).