| Customization: | Available |
|---|---|
| After-sales Service: | Twenty Four Hour Online |
| Warranty: | a Year |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Girth Gears: Rotary kiln Girth Gear,ball mill Girth Gear
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.
ZTIC 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
Send Enquiry
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: 16000 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
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
Quality assurance documents
The following reports are to be submitted to Quality Assurance:
a. Chemistry report
b. Physical report
c. Heat treatment documents
CITIC HMC Q/HM 973.2-2007 Specification for Steel Castings for Grinding Mills
d. Ultrasonic inspection report (before and after repairs)
e. Magnetic particle inspection report (before and after repairs)
f. Dimensional report
g. Weld repair maps
h. Weld procedures and Procedure qualification record
i. Welder qualification
j. Nondestructive testing inspector qualification
Item |
Structural features |
Processing measure |
Test content |
Girth Gear |
(1)GS42CrMo4Alloy Steel (corporate proprietary standards) HB 220~240 (2)semi-structured, Y-Spoke (3)Helical (4) reasonable sealing and alignment structure of alloy steel (corporate proprietary standards) |
(1) outer steel refining (R-H argon and vacuum treatment) (2) proprietary cold mold hanging sand technology to ensure the casting, the teeth dense (3) normalizing (proprietary technology) to ensure that the tooth surface hardness After (4)rough hobbing, release time, repair the joint surface, then fine roll (5) proprietary homemade hob fine hobbing |
(1)castings mechanical properties and chemical composition (internal standard) (2) roughing after sonic testing (3)semi-finishing, finishing after ultrasonic testing and magnetic particle inspection (4) tooth surface magnetic particle inspection, hardness test (5)tooth tolerance check (6) the factory assembly load test to check the accuracy of the size of gear |
Q: Why we believe in luoyang zhongtai industries co., ltd:
A: 1. More than 30 years experience.
2.We are the leading professional supplier of mining machinery, construction machinery, machines casting and forged parts.
3. All products achieved ISO9901:2000 quality management certificate and CE, ROHS certificates.
Q:Delivery time:
A: Parts lead time 1-2months, machines 2-3months.
Q:Payment terms:
A: Accept payment type: T/T, L/C, Western union,Cash.
30% deposit when signed contract. Full payment paid before shipping.
Q: Quality warranty?
A: Guarantee time: one year for main machinery. If something wrong we will provide the technical advice and find solution immediately. For those wearing parts we guarantee high quality parts for long-term supply.
Q: After sales service?
A: We can supply technical guide for machines running test and parts maintenance if end user needs.
ZTIC Heavy Industries is your business partner in the After Market.
ZTIC able to provide:
1. ENGINEERED SPARES - DESIGN AND MANUFACTURING
2. LARGE VOLUME STEEL AND IRON CASTING FOUNDARIES
3. HUGE MACHINE SHOP CAPABILITIES
4. TRAINING PROGRAMMES
5. PREVENTATIVE MAINTENANCE PROGRAMS
6. PREVETATIVE MAINTENANCE SERVICES
7. COMPREHENSIVE MAINTENANCE PROGRAMS
ZTIC's Field Service Engineers are trained specifically in the CITIC brand group products but are capable of undertaking the servicing of other OEM brands.
Our technicians are equipped with the most advanced technological diagnostic equipment available to trouble shoot your equipment to optimise performance and minimise down time.
ZTIC also has an extensive capability in supplying all you consumable and electrical/ mechanical spare part needs.
){kind=link}