China factory Nodular Cast Iron Large Girth Gear for Ball Mill and Rotary Kiln with Good quality

Merchandise Description

Solution Description

Girth Gears: Rotary kiln Girth Gear,ball mill Girth Equipment
Girth Gears offered find in depth application in different business sectors such as in sponge iron vegetation, steel & cement industry, mining market, wind mills as properly as in other market sectors. These are produced obtainable in module range of ten Module to 70 Module and in least diameters of one hundred mm to 15000 mm. Further, these comprise maximum bodyweight of 70 MT one pieces. Listed here the range of hardened & ground gear containers/gears comprise Worm gear bins, Helical / Double helical gears/gearboxes, Helical-Bevel gearboxes, Planetary Gearboxes and others.

External teeth 
Optimum diameter: 16000 mm 
Toothed face width: 1700 mm 
Greatest module: 45 by hob 
Optimum module: sixty five gear finishing cutter
Inner teeth 
Greatest Diameter: 6500 mm 
Greatest module: twenty five.4 
Toothed experience width: 400 mm
Forging materials process 
Last rolling 
Furnace cooling 
Manage on production 
H2o quenching 
Hardness testing 
Tough machining 
Ultrasonic testing and dimensional inspection 
Closing inspection certification
Our girth gears are used in the cement and minerals industries: 
Various sorts of horizontal mills 
Rotary dryers 
Rotary kilns 
Any other huge gear ring software
ZTIC Equipment invested in significant methods and achieved many improvements with pinions. The right combination of content, hardness and finishing between pinion and equipment is vital for a prolonged life span of the set up tools. We design and style and manufacture pinions to match each and every clients want, no matter how CZPT the circumstance might be. 

Pinion layout
solid on shaft / integral
self aligned
spur, helical or double helical
forged alloyed metal
via hardened, circumstance hardened or quenched and tempered
Spur, helical or double helical
equipment chopping with hobs
the gear high quality is checked by profile tester
tooth flank modification
– profile correction 
– guide correction (straight/barrel)
designs /ratios in accordance to ISO-DIN-A.G.M.A.
FEM/FEA simulation software
Our pinions are utilized in the cement and minerals industries:
Ball – mills
ROD – mills
Semi Autogeneous Grind (SAG)
Rotary kilns/coolers/dryers
One Source
Authentic Gear Manufacture (OEM) Specialized Drawings
Gearing technological expertise for kilns and grinding mills
Point out of the artwork manufacturing amenities and high quality
Global sales and provider assist
Rotary  Kiln Girth Gears
We are foremost provider the Kiln Girth Gears for the different crops as listed beneath.
Sponge Iron Plants  50TPD 100TPD 300TPD350TPD,500TPD,1000TPD
Cement vegetation as for each buyer prerequisite
Gears for phosphate mines, Alumina plant, kaolin-bentonite
Gear Cutting Capability:
100mm diameter to 16000mm diameter
10Module to 70Module
The Kiln girth gears are obtainable mostly in bi-component, 4 elements, 8 components or multi segments as for every the prerequisite and suitability with the application of equipment.
In the field of grinding mill factors, We supply mill heads,feed inlet,grinding roller,cement kiln driving ring, casting gears, shaft block .Also we source mill shell of welding buildings and fabrications.

The complex requirements of a large  Gear ring:
1) is pretreated before normalizing surface hardening remedy, the hardness ought to HB210 ~ 250 mechanical efficiency are the greatest toughness Rb 690MPa, generate pressure Rs 490MPa, elongation D5 11%, reduction of area W twenty five% , effect toughness Ak 30J enamel induction hardened, hardness HRC50 ~ 55 effective hardened layer depth 3 ~ 5mm.
two) general ultrasonic flaw detection, inside good quality ought to fulfill 2 specifications GB7233-87 normal demands tooth and fillet magnetic particle inspection, top quality should satisfy 2 requirements GB/T9444-88 requirements.
three) Observe the casting is not rounded R5 ~ R10.
4) Tooth chamfer at both ends and 1 45b.5) by 2 and a 50 % ring gear tooth width of each ring CZPT together the edge of a total ring made with higher energy bolts, blended with the tooth surface area should be at the bottom middle.
two large ring equipment producing process
2.1 of rough
Metal casting blank is provided by CITIC Weighty Machinery Co., Ltd. Heavy Forging plant, operate by GB11352-89 standard specifies requirements for modeling according to the casting approach, smelting, casting, strike containers, cleaning, dressing castings. In the course of inspection and acceptance by the drawings and Technical specifications for metal blank
Checks, according JB/T6402-ninety two requirements issued after acceptance
Down process.
two.2 roughing
Crossed by drawing and stay out allowance, alignment, relationship, processing equally inside of and exterior the circle, combining confront milling, drilling and other processes.
2.3 Exploration injuries
All round ultrasonic flaw detection, internal high quality need to fulfill the 2 demands of GB7233-87 requirements.
two.4 normalizing pretreatment
Semi-ring pairs normalizing and tempering treatment method, supply a good organization for subsequent surface area hardening push drawings deformation of the fifty percent ring equipment inspection after warmth therapy.
two.5 Machining
Initial 2 and a 50 % ring is manufactured with higher toughness bolts connecting the ring as a complete, the total procedure by drawing a circle Quannei Wai teeth and higher and lower end, and then drawing and machining milling procedure demands.
two.6 Elimination of processing pressure
The overall ring annealed to eliminate pressure.
two.7 total ring surface area hardening
IF along the alveolar tooth area induction hardening, hardness HRC50 ~ 55, efficient hardened layer depth 3 ~ 5mm.
2.8 Ultimate inspection
Initial, the detection frequency quenching, the hardness soon after tempering ring equipment cogging fulfills the specifications of the drawings next, to detect whether the highest outer diameter greater dimensions D6944 as the deformation 3mm, the mechanical correction necessary until finally experienced Thirdly, tooth and fillet magnetic particle inspection, high quality ought to fulfill 2 demands GB/T9444-88 standard demands Ultimately, according to the drawings and technical demands for final inspection.

Company Profile

Our Rewards


1. ENGINEERED SPARES – Layout AND Producing


3. Massive Equipment Store Capabilities

four. Coaching PROGRAMMES

five. PREVENTATIVE Servicing Plans

six. PREVETATIVE Upkeep Companies

7. Thorough Maintenance Applications

HangZhou ZXIHU (WEST LAKE) DIS.I INDUSTRIES’s Field Support Engineers are qualified specifically in the HangZhou ZXIHU (WEST LAKE) DIS.I INDUSTRIES manufacturer group merchandise but are capable of enterprise the servicing of other OEM manufacturers.

Our specialists are geared up with the most sophisticated technological diagnostic tools obtainable to trouble shoot your equipment to optimise overall performance and minimise down time.

HangZhou ZXIHU (WEST LAKE) DIS.I INDUSTRIES also has an substantial functionality in supplying all you consumable and electrical/ mechanical spare component demands.



Q: Why we imagine in HangZhou CZPT industries co., ltd:
A: 1. A lot more than thirty years encounter.
     2.We are the leading professional provider of mining machinery, building equipment, equipment casting and cast      parts
     3. All items reached ISO9901:2000 quality management certification and CE, ROHS certificates.
Q:Delivery time
A: elements guide time 1-2months, equipment 2-3months.
Q:Payment phrases
A: Accept payment type: T/T, L/C, Western union,Money.
30% deposit when signed deal. Full payment paid before shipping and delivery
Q: High quality guarantee?
A: ensure time: 1 year for major equipment. If something incorrect we will give the technical advice and find remedy quickly. For people wearing components we ensure substantial quality elements for prolonged-time period source.
Q: Soon after sales support?
A: we can supply technological CZPT for devices working check and parts maintenance if conclude consumer wants.

Soon after Sales Services


1. ENGINEERED SPARES – Design AND Production


three. Huge Equipment Store Capabilities

four. Coaching PROGRAMMES

five. PREVENTATIVE Routine maintenance Applications

six. PREVETATIVE Routine maintenance Companies

seven. Thorough Routine maintenance Programs

HangZhou ZXIHU (WEST LAKE) DIS.I INDUSTRIES’s Discipline Services Engineers are educated especially in the HangZhou ZXIHU (WEST LAKE) DIS.I INDUSTRIES model team goods but are able of endeavor the servicing of other OEM brands.

Our technicians are geared up with the most superior technological diagnostic products obtainable to trouble shoot your tools to optimise performance and minimise down time.

HangZhou ZXIHU (WEST LAKE) DIS.I INDUSTRIES also has an substantial functionality in giving all you consumable and electrical/ mechanical spare element requirements.


How to Choose a Worm Shaft and Equipment For Your Undertaking

You will discover about axial pitch PX and tooth parameters for a Worm Shaft 20 and Equipment 22. In depth information on these two components will support you pick a suited Worm Shaft. Study on to discover much more….and get your arms on the most sophisticated gearbox at any time developed! Below are some tips for picking a Worm Shaft and Equipment for your project!…and a number of items to preserve in thoughts.
worm shaft

Equipment 22

The tooth profile of Equipment 22 on Worm Shaft 20 differs from that of a standard equipment. This is because the tooth of Gear 22 are concave, making it possible for for greater conversation with the threads of the worm shaft twenty. The worm’s direct angle brings about the worm to self-lock, stopping reverse movement. Nonetheless, this self-locking system is not fully dependable. Worm gears are used in numerous industrial applications, from elevators to fishing reels and automotive electricity steering.
The new gear is set up on a shaft that is secured in an oil seal. To put in a new gear, you very first require to take away the previous equipment. Up coming, you require to unscrew the two bolts that maintain the equipment onto the shaft. Following, you ought to take away the bearing provider from the output shaft. As soon as the worm gear is eliminated, you require to unscrew the retaining ring. Following that, set up the bearing cones and the shaft spacer. Make sure that the shaft is tightened correctly, but do not more than-tighten the plug.
To prevent premature failures, use the right lubricant for the type of worm equipment. A higher viscosity oil is essential for the sliding motion of worm gears. In two-thirds of apps, lubricants had been insufficient. If the worm is frivolously loaded, a low-viscosity oil may be enough. Or else, a high-viscosity oil is necessary to keep the worm gears in good problem.
One more choice is to vary the amount of enamel close to the gear 22 to decrease the output shaft’s velocity. This can be completed by environment a specific ratio (for example, five or ten occasions the motor’s speed) and modifying the worm’s dedendum appropriately. This process will minimize the output shaft’s pace to the sought after stage. The worm’s dedendum ought to be tailored to the desired axial pitch.

Worm Shaft 20

When picking a worm equipment, consider the adhering to items to contemplate. These are high-performance, minimal-sounds gears. They are durable, lower-temperature, and lengthy-lasting. Worm gears are widely utilized in numerous industries and have several rewards. Listed beneath are just some of their benefits. Go through on for more information. Worm gears can be tough to preserve, but with correct servicing, they can be extremely trustworthy.
The worm shaft is configured to be supported in a body 24. The dimension of the frame 24 is determined by the middle distance amongst the worm shaft twenty and the output shaft sixteen. The worm shaft and equipment 22 may not appear in make contact with or interfere with a single yet another if they are not configured properly. For these reasons, proper assembly is essential. However, if the worm shaft twenty is not correctly put in, the assembly will not operate.
One more crucial thing to consider is the worm material. Some worm gears have brass wheels, which could lead to corrosion in the worm. In addition, sulfur-phosphorous EP equipment oil activates on the brass wheel. These components can trigger substantial reduction of load floor. Worm gears should be mounted with higher-good quality lubricant to prevent these difficulties. There is also a want to choose a material that is large-viscosity and has lower friction.
Pace reducers can include a lot of various worm shafts, and every single pace reducer will call for various ratios. In this situation, the speed reducer producer can offer different worm shafts with diverse thread styles. The various thread designs will correspond to different equipment ratios. Irrespective of the equipment ratio, each and every worm shaft is created from a blank with the desired thread. It will not be difficult to locate one particular that suits your demands.
worm shaft

Gear 22’s axial pitch PX

The axial pitch of a worm equipment is calculated by using the nominal centre distance and the Addendum Aspect, a continuous. The Middle Length is the length from the middle of the gear to the worm wheel. The worm wheel pitch is also referred to as the worm pitch. Equally the dimension and the pitch diameter are taken into consideration when calculating the axial pitch PX for a Gear 22.
The axial pitch, or lead angle, of a worm equipment decides how efficient it is. The increased the guide angle, the less efficient the gear. Direct angles are directly relevant to the worm gear’s load capability. In distinct, the angle of the lead is proportional to the size of the stress spot on the worm wheel teeth. A worm gear’s load potential is straight proportional to the volume of root bending anxiety launched by cantilever motion. A worm with a direct angle of g is practically equivalent to a helical equipment with a helix angle of 90 deg.
In the current creation, an enhanced approach of manufacturing worm shafts is described. The method entails figuring out the preferred axial pitch PX for every reduction ratio and body dimensions. The axial pitch is established by a approach of producing a worm shaft that has a thread that corresponds to the sought after gear ratio. A equipment is a rotating assembly of areas that are manufactured up of tooth and a worm.
In addition to the axial pitch, a worm gear’s shaft can also be manufactured from various supplies. The materials employed for the gear’s worms is an crucial thought in its assortment. Worm gears are usually created of metal, which is stronger and corrosion-resistant than other materials. They also call for lubrication and could have ground teeth to lessen friction. In addition, worm gears are usually quieter than other gears.

Equipment 22’s tooth parameters

A examine of Gear 22’s tooth parameters uncovered that the worm shaft’s deflection depends on numerous variables. The parameters of the worm gear have been different to account for the worm gear size, strain angle, and dimensions issue. In addition, the amount of worm threads was altered. These parameters are assorted dependent on the ISO/TS 14521 reference gear. This review validates the designed numerical calculation product employing experimental results from Lutz and FEM calculations of worm gear shafts.
Utilizing the benefits from the Lutz check, we can obtain the deflection of the worm shaft employing the calculation technique of ISO/TS 14521 and DIN 3996. The calculation of the bending diameter of a worm shaft in accordance to the formulation given in AGMA 6022 and DIN 3996 display a very good correlation with check benefits. Even so, the calculation of the worm shaft using the root diameter of the worm utilizes a different parameter to compute the equal bending diameter.
The bending stiffness of a worm shaft is calculated by means of a finite aspect model (FEM). Employing a FEM simulation, the deflection of a worm shaft can be calculated from its toothing parameters. The deflection can be regarded for a comprehensive gearbox program as stiffness of the worm toothing is considered. And finally, based mostly on this review, a correction issue is produced.
For an excellent worm equipment, the number of thread begins is proportional to the dimension of the worm. The worm’s diameter and toothing aspect are calculated from Equation 9, which is a method for the worm gear’s root inertia. The length among the main axes and the worm shaft is decided by Equation 14.
worm shaft

Equipment 22’s deflection

To study the impact of toothing parameters on the deflection of a worm shaft, we utilized a finite aspect approach. The parameters deemed are tooth peak, force angle, dimension aspect, and amount of worm threads. Every of these parameters has a distinct affect on worm shaft bending. Table 1 exhibits the parameter variants for a reference gear (Equipment 22) and a various toothing design. The worm gear size and quantity of threads determine the deflection of the worm shaft.
The calculation method of ISO/TS 14521 is primarily based on the boundary circumstances of the Lutz test set up. This strategy calculates the deflection of the worm shaft employing the finite component strategy. The experimentally calculated shafts were when compared to the simulation outcomes. The examination results and the correction element ended up compared to verify that the calculated deflection is similar to the calculated deflection.
The FEM evaluation indicates the effect of tooth parameters on worm shaft bending. Gear 22’s deflection on Worm Shaft can be explained by the ratio of tooth drive to mass. The ratio of worm tooth drive to mass decides the torque. The ratio among the two parameters is the rotational pace. The ratio of worm equipment tooth forces to worm shaft mass determines the deflection of worm gears. The deflection of a worm equipment has an influence on worm shaft bending capability, efficiency, and NVH. The continuous development of power density has been accomplished via developments in bronze supplies, lubricants, and manufacturing quality.
The primary axes of moment of inertia are indicated with the letters A-N. The a few-dimensional graphs are equivalent for the seven-threaded and a single-threaded worms. The diagrams also show the axial profiles of every single gear. In addition, the major axes of minute of inertia are indicated by a white cross.

China factory Nodular Cast Iron Large Girth Gear for Ball Mill and Rotary Kiln     with Good qualityChina factory Nodular Cast Iron Large Girth Gear for Ball Mill and Rotary Kiln     with Good quality

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