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      Products

      Products

      Girth Gears

      Girth Gear,rotary Kiln Girth Gear,ball mill Girth Gear 

      Girth Gear,rotary Kiln Girth Gear,ball mill Girth Gear

      Girth Gear,rotary Kiln Girth Gear,ball mill Girth Gear

      Girth Gears

      Girth Gears offered find extensive application in different industry sectors including in sponge iron plants, steel & cement industry, mining industry, wind mills as well as in other industry sectors. These are made available in module range of 10 Module to 70 Module and in minimum diameters of 100 mm to 15000 mm. Further, these comprise maximum weight of 70 MT single pieces. Here the range of hardened & ground gear boxes/gears comprise Worm gear boxes, Helical / Double helical gears/gearboxes, Helical-Bevel gearboxes, Planetary Gearboxes and others.

      CITIC IC Girth Gear Cutting Machines include:

      • Ø16m CNC Hobbing Machine
      • Ø12m Gear Cutting Machine (Switzerland)
      • Ø10m Hobbing Machine (Germany)
      • Ø4m CNC High Speed Hobbing Machine (Germany)
      • Ø1.6m Horizontal CHC Hobbing Machine (Germany)
      • Ø5m CNC Profile Gear Grinding Machine (Germany)
      • Ø2.8m CNC Profile Gear Grinding Machine (Germany)
      • Ø1.25m CNC Profile Gear Grinding Machine (Germany)
      • Ø1m CNC Profile Gear Grinding Machine (Germany)
      • Ø0.8m CNC Profile Gear Grinding Machine (Germany)
      • Automatic positioner

      Module Range:  10 Module to 70 Module.

      Diameter : Min 100 mm to16000 mm.

      Weight : Max 120 MT single piece.

      Hardened & Ground Gear Boxes/Gears:

      • Worm gear boxes
      • Helical / Double helical gears/gearboxes
      • Helical-Bevel gearboxes
      • Planetary Gearboxes
      • Hardened & Ground Helical- bevel gears & Spiral-bevels gears/gearboxes.
      • Rack & Pinions

      Ratings:

      • Min 3 hp to  Max 1400 hp
      • Splash / Forced lubrication type
      With more than 1000 girth gears sold over the world CITICIC Gear is a leading supplier in the cement and mineral industry. And as member of AGMA (American Gear Manufacturers Association), we do actively take part in defining the standard for gear rating calculations and service factors. 

      We provide girth gears in three different designs

      • Fabricated steel
        - forged ring
        - rolled plate
      • Cast steel
         
         
      • Ductile (Nodular) cast iron  

      Fabricated gears became more common in the past and are constructed with forged steel gear rim materials and electro welded body structure. The rings are manufactured from a whole block of high resistance alloy steel. After the rough machining of the ring, we carry out hardening and tempering heat treatment in order to improve the mechanical characteristic and therefore its relevant performance.  

      Avantages of fabricated girth gears

      • The forged material structure excludes the risk of inclusions
      • Structure defects like gas holes, micro shrinkage, pin holes, hot tears, sand and slag inclusions are avoided
      • Hence, repair welding of the body structure and e.g. grinding of toothed areas is not required.
      • The fabricated manufacturing procedure excludes the need for patterns and risers
      • Rim material has higher hardness and higher strength than the material used for the underlying structure (i.e. web, gussets)

      These features will reduce the lead time and costs. Fabricated manufacturing ensures a fast delivery.

      This is especially beneficial in an emergency situation, where the existing gear rim is suffering from damage   

      Features

      • External teeth
        Maximum diameter: 11200 mm
        Toothed face width: 1700 mm
        Maximum module: 45 by hob
        Maximum module: 65 gear finishing cutter
      • Internal teeth
        Maximum Diameter: 6500 mm
        Maximum module: 25.4
        Toothed face width: 400 mm

       

      Forging material process
      • Forging
      • Final rolling
      • Furnace cooling
      • Control on production
      • Water quenching
      • Hardness testing
      • Rough machining
      • Ultrasonic testing and dimensional inspection
      • Final inspection certification


      Standards/Certificates
      • UNI EN ISO
      • AWS
      • ASTM
      • ASME
      • DIN

      Applications
      Our girth gears are applied in the cement and minerals industries:
      • Various types of horizontal mills
      • Rotary dryers
      • Rotary kilns
      • Any other large gear ring application

      Pinions

      CITICIC Gear invested in significant resources and achieved many innovations with pinions. The right combination of material, hardness and finishing between pinion and gear is crucial for a long lifetime of the installed equipment. We design and manufacture pinions to match every customers need, no matter how unique the situation might be.

      Pinion design

      • bored
      • solid on shaft / integral
      • self aligned
      • spur, helical or double helical

      Materialization

      • forged alloyed steel
      • through hardened, case hardened or quenched and tempered
      • Spur, helical or double helical
      • carburized
      • induction
      • nitrided

      Characteristics

      • gear cutting with hobs
      • the gear quality is checked by profile tester
      • tooth flank modification
        - profile correction
        - lead correction (straight/barrel)
      • designs /ratios according to ISO-DIN-A.G.M.A.
      • FEM/FEA simulation software

      Standards/Certificates

      • UNI EN ISO
      • AWS
      • ASTM
      • ASME
      • DIN
      Applications
      Our pinions are applied in the cement and minerals industries:
      • Ball - mills
      • ROD - mills
      • Semi Autogeneous Grind (SAG)
      • Rotary kilns/coolers/dryers

       

      Advantages

      • One Source
      • Original Equipment Manufacture (OEM) Technical Drawings
      • Gearing technical expertise for kilns and grinding mills
      • State of the art manufacturing facilities and quality
      • Global sales and service support

      Kiln Girth Gears

      We are leading supplier the Kiln Girth Gears for the various plants as listed below.

      • Sponge Iron Plants  50TPD 100TPD 300TPD350TPD,500TPD,1000TPD
      • Cement plants as per customer requirement
      • Gears for phosphate mines, Alumina plant, kaolin-bentonite

      Gear Cutting Capacity:

      • 100mm diameter to 16000mm diameter
      • 10Module to 70Module

      The Kiln girth gears are available mainly in bi-part, four parts, 8 parts or multi segments as per the requirement and suitability with the application of gear.

      Previous:Forged rolls
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