We present in great detail the technological opportunities of one of the factories of ZMM Bulgaria Holding JSC, ZMM Nova Zagora which is specialized for the production of gear wheels – spur and helical gears.Factory is equipped with gear grinding machines type Reishauer and Okamoto and also well equipped control laboratory.
In February ZMM Nova Zagora, put into operation a new gear-grinding machine Niles ZE400/500 of the German company KAPP-NILES. The machine was purchased with the support of the Ministry of Economics and the Operational Program "Development of the Competitiveness of the Bulgarian Economy 2007-2013". It achieves quality 4 according to DIN 3962 for profile grinding of cylindrical gears with a maximum diameter of 500 mm. The machine is supplied with CAM software for creating a programs.
ZMM Nova Zagora produce mechanical multiple friction disks clutches, spare parts, sprockets, toothed belt pulleys, accessories and units (gear boxes) for metalcutting machines, agricultural machines, woodworking machines and other machine tools.
There is also workshop for thermal treatment as cementation and induction hardening. ZMM Nova Zagora is certified according ISO 9001:2000 and executes orders from European companies.
We would like to introduce some data about the technical equipment of our plant ZMM Nova Zagora.

Technical data about equipment producing gear wheels and sprockets
1 Module Mo1- Mo6 incl.
2 Class of accuracy for mating gears 4 acc.DIN 3961
3 Max machining diameter 500mm
4 Pitch of sprockets 3/8”- 1” incl.

Technical data about equipment producing shafts
1 Min and Max machining diameters Ø20mm – Ø150mm
2 Min and Max machining length of the shafts L=150mm- L=1000mm
3 The number of parallel sided teeth of spline shafts Z= 4, 6 and 8
4 Spline shafts with involute teeth α = 30°

Technical data about equipment for heat treatment
1. Chamber and pit furnaces with working volume for heat treatment of the parts up to 950°C
1.1 Chamber furnaces for parts with max dimensions
Height= 400mm
Width- 800mm
Length- 400mm

1.2 Pit furnaces for parts with max dimensions Diameter= 800mm
Depth- 1200mm
1.3 Output power and operating frequency under high frequency hardening 60kW;
66kHz and 440kHz
1.4 Maximal dimensions of the high frequency hardened parts
type- shaft Diameter- 80mm
Length- 800mm
type- disk Diameter- 250mm
Thickness- 20mm

We are mainly interesting in the cooperation of production of assembly units as well as parts and units. If you have serious interest in cooperation with our company we can arrange a meeting at ZMM Nova Zagora. If you need further information about our company please inform us.
For more detailed information about ZMM Nova Zagora you can visit its web site at: www.zmmnz.com
Looking forward to hearing from you, we remain with kindest regards.

The main sphere of business is a production of the assembled configurations with various numbers of parts accordingly to the technical documentation delivered by customers. The company owns the proper technology placed on the production area of 3600 m². The technology provides the possibility to machine the large sized objects as well. (Max. sizes: 5000 x 2500 x 2200 mm, the mass up to 10 tons). The achievable precision is IT7. The welding workshop is equipped with modern welding technology.