Gears, pinions & gearboxes
التروس, التروس المحيطية و التروس الصغيرة
Assess the complete gear drive, not just an individual gear
Large mills and rotary kilns use open girth gear and pinion drives. Cone and gyratory crushers use bevel gear sets, while roll equipment may use enclosed gearboxes. Every gear must be checked together with its mating gear, bearings, lubrication, couplings, foundations and alignment.
Open drives Mill and rotary kiln girth gears and pinions
Bevel gear sets Gears and pinions for gyratory and cone crushers
Enclosed drives Roll crushers, stirred mills and reduction gearboxes
متطلبات التحديد Tooth geometry, materials, mating gears, loads, alignment, lubrication and contact
System scope
Tooth geometry Spur, helical or bevel teeth, module, tooth count, pressure angle and profile shift
Mating gear data Girth gear or gear wheel, pinion, centre distance, face width and helix hand
Installation interfaces Segment joints, bores, keys, interference fits, bearings, couplings and foundations
Supply identification OEM, complete model, assembly number, part number, material and accuracy
Matching gear parameters is only the first step
New gear teeth must be compatible with the mating gear. Service life also depends on bearing clearance, shaft deflection, foundation settlement, thermal expansion, couplings, lubricant spray and guards. Used-part contact patterns, tooth damage and vibration records help identify root causes.
Girth gears are also large ring components, but this page reviews tooth geometry and mating relationships by drive function. For sprockets, see chains and sprockets.
Open gear drives
Check girth gear, pinion, bearings and lubrication as a matched system
Segment joints, radial runout and tooth contact determine load distribution on large-diameter girth gears.
SAG and ball mill girth gears
Transfer pinion torque to the mill shell. Check module, tooth count, pressure angle, helix hand, segments, hole patterns, runout, material and mating pinion.
SAG and ball mill drive pinions
Receive drive torque and mesh with the girth gear. Check tooth geometry, journals, coupling interfaces, bearing positions, material, heat treatment and mesh adjustment.
Rotary kiln girth gears
Drive the kiln shell at low speed. Check shell interfaces, operating-temperature centre position, segments, gear runout, axial position, tooth geometry and lubrication.
Rotary kiln pinions
Form an open gear set with the kiln girth gear. Check the shaft, bearing housings, couplings, cold and hot alignment, lubrication and tooth contact.
Crusher bevel gear sets
The gear set also determines the drive position of the eccentric assembly
Check the gear wheel, pinion, countershaft bushings, thrust support and eccentric assembly against the same machine version.
Cone crusher gear wheels and bevel ring gears
Mesh with the pinion to drive the eccentric assembly. Check the equipment series, tooth geometry, mounting height, thrust face, hole pattern and mating pinion.
Cone crusher drive pinions
Transfer countershaft torque to the gear wheel. Check whether the shaft and gear are integral or assembled, along with tooth geometry, journals, bushings, end clearance and rotation direction.
Gyratory crusher gears
Drive the eccentric assembly to produce main shaft motion. Check the model, tooth geometry, eccentric assembly version, thrust system, fastening and lubrication paths.
Gyratory crusher pinions
Form a drive pair with the gear wheel. Check tooth geometry, shaft and gear construction, bearings, seals, axial location, backlash and contact pattern.
Gearboxes and other gear drives
Relate enclosed drives to machine torque and interfaces
علبة التروس identification, ratio, input and output shafts, and mounting arrangement generally take priority over individual gear dimensions.
Toothed roll crusher synchronising gearboxes
Distribute drive power to the toothed rolls and maintain their speed relationship. Check the equipment model, ratio, torque, shaft ends, mounting flanges, lubrication and cooling.
Sugarcane mill pinions
Distribute torque in heavy-duty, low-speed crushing drives. Check roll position, tooth count, centre distance, bore, key, lubrication and the wet, corrosive environment.
Spiral classifier gears and sprockets
Drive the spiral shaft at low speed. Check drive type, tooth count or chain links, bore, key, centre distance, slurry contamination and guarding.
Tower and stirred mill gearboxes
Drive the vertical agitator shaft. Check the installed model, power, ratio, output shaft, thrust and radial loads, lubrication, cooling and mounting interfaces.
Materials, heat treatment and manufacturing routes
Match gear materials to dimensions, loads, tooth surfaces and mating parts
No single alloy steel grade is specified as a universal solution for every gear.
Failure diagnosis
Trace tooth damage back to loading, alignment and lubrication
Copying worn tooth geometry without addressing foundations, bearings or lubrication can lead to repeated uneven loading and premature failure.
| Symptoms | الفحوصات ذات الأولوية | Associated Risks |
|---|---|---|
| One-sided tooth contact or uneven wear | Bearings, shaft axes, foundations, girth gear runout, hot position, segment joints and centre distance | Local overload, pitting, spalling and broken teeth |
| Pitting or spalling | Contact stress, material and heat treatment, roughness, lubricant film, contamination and surface defects | Vibration, noise and rapid tooth surface deterioration |
| Tooth root cracks or broken teeth | Bending loads, impact, root fillets, machining marks, material defects and overload history | Drive failure and damage to adjacent components |
| Scoring or scuffing | Lubricant, supply, speed, temperature rise, sliding ratio, tooth roughness and foreign matter | Tooth surface damage, overheating and deteriorating mesh |
| Steps at girth gear segment joints | Segment contact faces, location features, bolt preload, shell flange, installation sequence and measurement | Impact loads, noise and local tooth damage |
| Journal or keyed connection damage | Torque, interference, key fit, fillets, bearings, couplings and installation method | Looseness, cracks, eccentricity and changes in gear position |
Enquiries and quality control
Information for gear-drive supply
Prioritise data for both mating gears, installation measurements and failure records.
المعدات والتجميع
OEM, complete model, serial number, drive location, assembly number, part number and rotation direction.
Tooth geometry parameters
Module, tooth count, pressure angle, helix angle and hand, profile shift, face width, centre distance and accuracy.
Shaft and mounting interfaces
Bores, journals, keys or splines, interference fits, segments, flange hole patterns, bearings and couplings.
Loads and operation
Power, torque, speed, starts and stops, impact, thermal condition, vibration and expected service life.
المواد والتصنيع
Material, chemical composition, heat treatment, tooth surface and core requirements, casting, forging or welding route, and repair restrictions.
Inspection and contact
Tooth profile and lead, runout, non-destructive testing, hardness, contact pattern, backlash, trial assembly and material documentation.
Technical references: Metso lists gears and pinions among core mill spare parts and describes different manufacturing routes for large drives, including ductile iron castings, cast steel and welded steel. Its mill maintenance guidance calls for checking pinions, girth gears, bearings, lubrication systems and alignment together.Metso Grinding Mill Parts · Metso Mill Component Replacement
الأجزاء والمعدات ذات الصلة
Related equipment, OEM models, gear products and materials
General equipment pages explain drive function, OEM pages identify machine models and drawing references, and product pages cover materials, interfaces and failure information.
SAG Mills Girth gears, pinions, bearings, couplings and lubrication. Ball Mills Explore gear sets and adjacent drive components through general equipment structure. Metso Select / Premier Ball Mills Check the brand series, dimensions, drive arrangement and installed drawing reference. الكسارات الدوارة والمخروطية Bevel gear sets, eccentric assemblies and countershaft supports. Large ring components Girth gear segments, structure and manufacturing interfaces. العلامات التجارية والموديلات الأصلية Identify dedicated gears by complete model, assembly number and part number.
Request a quotation for gears, girth gears and pinions
Submit equipment models, mating gear data, tooth geometry, assembly and part numbers, materials, operating conditions and failure information for technical review.
خدمات صنع في الصين
من التقييم الفني إلى تسليم المنتج بالكامل
توفر شركة ANRANST للعملاء العالميين تقييمات هندسية، واختيار التصنيع الصيني، ومراقبة الجودة، وتسليم الأجزاء النهائية لقطع الغيار الصناعية المقاومة للتآكل حسب الطلب، ويمكنها أيضًا دعم قطع الغيار الصناعية الأخرى حسب الطلب.
مراجعة الرسومات والهندسة
قم بمراجعة أسطح التزاوج وأبعاد الواجهة، وقم بتقييم جدوى المواد والمعالجة الحرارية والتصنيع.
تحديد المادة والمعالجة الحرارية
تُحدَّد درجات المواد وعمليات المعالجة الحرارية لكل طلب على حدة، وتُثبَّت في الاتفاقية الفنية وتُتابَع أثناء الإنتاج.
ضبط الجودة
يشمل ذلك تأكيد الرسم، ومراقبة المواد والعمليات، وتتبع الإنتاج، وتنسيق عمليات الفحص والقبول.
تسليم المنتج النهائي
تنظيم عمليات التصنيع والتحقق من الجودة والتعبئة والتغليف وتسليم المنتجات النهائية الكاملة لتشكيل حلقة إمداد قابلة للتنفيذ.
قم بتزويدنا بالنماذج الحالية، والرسومات، وأرقام الرسومات، وأرقام الأجزاء، والمواد، أو معلومات ظروف التشغيل، وسنقوم بتحديد التحقق الفني ومسار التوريد وفقًا لذلك.
إرسال طلب