MJM Industrial Limited
Facilities and Capacity
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Address: 2307 Huiya Intl, 1107 Tiantong North Road, Ningbo, China
TEL: 86-574-83065330
FAX : 86-574-83065331
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Facilities and Capacity

we are committed to the implementation of the latest innovative technologies in slew bearing manufacture. Profits are continuously re-invested in new capital equipment and process technologies in order to maintain the highest levels of quality.

Our state of the art manufacturing facility includes:

CNC Turning

We currently have ten CNC vertical borers capable of machining slew bearings and components from 500 mm in diameter to 6.3 m in diameter. Some of the vertical borers have live spindle and allow for effective and efficient machining and drilling of components. Continuous investment and upgrading of our machine shop is key to our ability to provide our clients with the highest quality products and on order we currently have a 6.5 m CNC vertical boring machine which will be commissioned in 2010.

Induction Hardening Plants

The key to a long service life of a slew bearing, lies in the quality of the raceways and ability to achieve a uniform hardness at predesigned depth. We developed the induction hardening expertise over many years and using two separate induction hardening plants we are able to Induction harden the raceways and gear teeth as part of our internal processes for manufacturing slew bearings. In addition we offer our expertise to the general engineering industry and are able to induction harden standard components and create customized hardening patterns for clients using our CNC induction hardening plant.

CNC Drilling, Tapping & Milling

Accurate drilling of mounting holes, lifting holes, grease ports and retaining holes is achieved through the use of CNC drilling centers. Using a Renshaw probe to ensure 100% accuracy during setup slew bearings are drilled effectively and efficiently. Utilizing the CNC capabilities of the 2 Hartford drilling centers we are able to offer milling services to our customers, including the milling of sprockets.

Gear-Cutters

With over ten gear cutters capable of cutting internal and external gears, we are able to meet the capacity of our slew bearing range in addition offer gear cutting services to our customers , including the manufacture and reconditioning of girth gears. The maximum size external gear we can gear cut is 7m in diameter, and on the internal range we can cut a maximum of 4 m in diameter.

Utilising a combination of shapers, hobbers and gear grinders we can offer our clients a wide spectrum of AGMA and DIN quality standards.

CNC Grinders

Our state of the art Hofler CNC gear grinder allows us to grind external gears to a maximum of 1800 mm and achieve the highest quality AGMA and DIN standards. We are able to grind new gears or recondition gears for extended service life. The probing mechanism allows for an accurate report to be generated to verify lead and profile quality standards.

Lifting Equipment

Material handling is facilitated by the use of 10 overhead cranes, with highest load capable of being lifted being 32 tons.