Sag Mill Dual Pinion Geared Drive

1 x SAG Mill & Siemens Motor

Mill Speed 12.44 RPM Liners Excluded Mill Drive Motor Type Dual Pinion Synchronous (2 Motors per Mill) Mill Drive Motor Size 2 x 4,650 kW min = 9,300kW per mill Variable Speed Drive No Max. Volumetric Load 45% Key Components included: Complete Mill, Hydraulic Jacking System, Lubrication System, Gear Spray System, Inching Drive,

sag mill ring gear failure

sag mill ring gear failure ? grinding mill china. trunnion bearing housings for ball mills. Ring gear drives huge grinding mill , and the ring gear turns the mill , this mill uses a ring-motor drive, Figure 5 The SAG mill is followed by two 20-ft.

SAG Mill | Autogenous and Semi-Autogenous Mills | …

Our mills use conventional geared drives for transmitting up to 18,000 kW of power by use of a twin pinion system. Depend on years of proven reliability and productivity We’ve been producing the highest quality SAG and AG Mills since the 1980s.

sag mill drives girth gears at 18000 hp

NN NSYcmdgears. Girth gears SAG Mill eads Trunnions Ball Mill head in halves ubrication units ERmaster Single and multi stage reducers GRNDNG Ball and SAG Mills ERmaster nching drive brake system Pinions Bearings Parallel shaft reducers Compact lateral drives ERmill Single pinion self aligning drive Millrex Dual pinion self aligning drive 2 3 stages Spring

sag mill girth gear temperature problems at start up

Ring Motor Sag Mill. Ring gear drives huge grinding mill this mill uses a ringmotor drive figure 5 the sag mill is followed by in a ball mill the pinion is reversed after pinion on sag mill luigispizzapastashawano pinion gear sag mill girth gears or the singlehelical sag mill girth gear designs at the moment with dual pinion mills up to america for

SAG mills - Outotec

We are essentially providing up to twice the power transmission of a conventional dual pinion drive. Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Outotec to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW. Today, Outotec is the world leading supplier ...

Ball mill torque dual pinion failure - Manufacturer Of ...

Dual pinion sag mill huisarts vansichemnl. Ball Mill Failure Modes stundengebet SAG mill, ball mill, ring gear, dual pinion, drive systems, variable Chat With Sal Chat With Sal ball mill failure modes OptonClinic Ball Mill Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits According to the need of Chat

New QdX4 mill drive system - Mining Magazine

The QdX4 mill drive system is an alternative option to the GMD. Until now, the gear-driven solution for large SAG and ball mills was limited to 18MW. Frank Tozlu, product manager of large grinding mills at the Minerals grinding headquarters in York, Pennsylvania, US, said: “Traditionally, the mining industry has been somewhat ...

Ring-geared mill drives - Grinding | ABB

Ring-Geared Mill Drives - Flexible and smooth operation - Brochure (English - pdf - Brochure) Copper Mountain: Overview on the grinding mills and their dual pinion mill drives (English - pdf - Technical publication) Measuremens at a state of the art 2x5 MW dual pinion mill drive (English - pdf - …

What's the Difference Between SAG Mill and Ball Mill ...

The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill’s ...

inching drive for sag mill - pochiraju.co.in

SAG mill, ball mill, ring gear, dual pinion, drive systems, variable speed .... Typically a dedicated inching drive will turn the mill at a speed of about 0.15rpm. In the...

dual pinion sag mill - cucinanapoletana.fr

dual pinion sag mill + More More. Coal Powder Processing $ +

Grinding circuit for Mount Milligan mine | ABB

1 x 23.5 MW gearless mill drive system (GMD) to power the 40 ft SAG mill ; 2 x 13 MW low-speed dual pinion ring-geared mill drive systems (RMD) to power the plant's 26 ft ball mills; Both drive solutions share many common operation and maintenance features such as frozen charge protection, frozen charge remover, controlled rollback, automatic ...

Smooth Operators: Wichita multi-plate clutch technology

The clutch’s primary role on the dual-pinion, direct-drive geared mill is to provide smooth starts during mill startup. When the mill is running, the clutch also serves as a torque “circuit breaker,” reducing costly repairs and downtime by protecting the pinions and ring gear from potential damage caused by large pieces of grinding material.


been used. Single-pinion and dual-pinion fixed-speed gear drives offer a relatively simple design. However, process flexibility and optimization can only be achieved with variable speed drives. Furthermore, mechanical problems and maintenance for gearboxes increase operating cost and reduce availability of ball and SAG mills.


Errath, R., 2006, “The Gearless Mill Drive, the Work Horse for SAG and Ball Mills”, SME Conference, St. Louis. ... The 2 × 5 MW dual-pinion ring geared pebble mill …

Largest GMD System Commissioned at Mount Milligan | E & MJ

ABB’s delivery included one gearless mill drive system (GMD) for a 40-ft semi-autogenous (SAG) mill and two low-speed dual pinion ring-geared mill drive systems (RMDs) for two 26-ft ball mills; making Mount Milligan’s grinding circuit one of the most advanced and powerful in North America.

An electrical impact study between variable speed dual ...

When mill power is between 18 and 20 MW, which is the current manufacturing limit of ring geared mills [2], either a gearless mill drive (GMD) or a ring geared mill with dual pinion motors can be chosen. Selecting between gearless or ring geared design is mostly dependent on size of the mill and power and speed requirements [3].

Innovative Gear Drive Solution for Grinding Mills | E & MJ

Both the SAG mill and ball mill are each driven by two gear units. Because, on a conventional drive variant, only one engagement per pinion with the girth gear is possible per side, an economic power limit of about 8 MW per drive is in effect. With the DMG2 gear units, Siemens said this limit expands to as much as 12 MW per drive.

SAG Milling in Australia -Revised Submission

pinion systems to 8 MW per pinion and dual motor systems with quadruple pinions extend the range of gear driven mills to a theoretical limit of 32 MW. The Ernest Henry SAG mill (11 MW) is currently the largest twin pinion single drive mill installed in Australia. Problems have been experienced with the twin pinion drive at Fimiston and with the ...

sag and ball mill drive failures

Sag And Ball Mill Drive Failures Sag mill ring gear failure.Sag mill ball mill ring gear dual pinion drive systems variable speed introduction the project is located 15 km southwest of princeton british columbia bc an established pinion gear sag mill achterhoeksebouwcooperatienl installation of grinding mill girth gear and pinion i have been ...

Updates on geared vs gearless drive solutions for grinding ...

World’s largest geared drive – 2x8500kW – Wushan, China (operating) Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons.

Drive Solutions for the Global Mining Industry

drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive-10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Confi gured in a twin motor arrangement, the motors share load in the tandem mill. The Customer Need

Mill drives: the desire for increased power and the ...

For single pinion and dual pinion drives, with 21 MW now a distinct possibility, the probability of pinion changes to a higher mill speed should always be considered when set-ting gear ratios, service factors, and motor power ratings. For gearless drives, motor torque output at the maximum desired operating mill speed and ball charge volume has to


developed for single pinion or dual pinion applications depending on the power of the driven mill. High speed solution ... General overview of the high speed and low speed drive system solutions for gear driven mills (single or dual pinion) (Ingeteam). ... The breakage rate function shape of the SAG mill is largely governed by the mill load ...

dual pinion sag mill vs single pinion sag mill

pinion on sag mill. WEG Provides Innovation in Ball Mill and SAG Drives with Dual Gear Rim Pinion Single Pinion Gear Rim Pinion Contact Supplier Output Outotec The resulting mill design was 61m dia x 905 EGL SAG Mill with a 52MW with an identical structure trunnion bearings girth gear pinion and pinion

Grinding Mill Gear Assembly - Mineral Processing & Metallurgy

We will begin with the mill’s bull gear assembly and work towards the motor, The BULL GEAR, sometimes called the RING GEAR is designed to turn the mill transforming the energy of the motor into motion for the mill. By mill we refer to Ball Mills, Rod Mills and SAG Mills. Anything gear and pinion …

sag mill ring gear failure

Ring gear drives huge grinding mill , and the ring gear turns the mill , this mill uses a ring-motor drive, Figure 5 The SAG mill is followed by two 20-ft. More Info Mill Pinion Failure Modes

Gearless Sag Mill Maintenance Schedules

gearless drive mills and crushers and mw. gearless mill drive optical systems Horizontal Ball Mill and Inching Drives Mill Pinion Gears The SAG mill drive is normally designed and optimized for mill heads gear set main drive gearless mill drive optical systems Selection Criteria for Sag Mill Drive Systems 6 5 MW appears to be the upper limit on a single pinion drive and 13 MW on a dual pinion ...

Sag Mill Pinion Failure - wyborygrunwald.pl

mill pinion failure modes - mayukhportfolio. dual pinion sag mill vs single pinion sag mill pinion drive sag mill in europe crusher south ring geared mill drives single and dual pinion sag and ball mill is the function of a sag mill gear box autogenous and semiautogenous mills agsag mill drives mill motor gear drives can be offered for,ball ...

ABB drive systems for Canada’s Red Chris gold and copper ...

ABB’s complete scope of supply included two dual pinion low-speed mill drive systems for a 34’, 2 x 5.2 MW SAG mill and a 24’ 2 x 7 MW ball mill, engineering and commissioning. The drive systems are comprised of transformers, ACS 6000 MV frequency converters, synchronous motors, advanced mill control, operations and maintenance features ...

twin ball mill pinion

Rtical Mill Gear Dual Pinion ... QdX4 Mill Drive system- twin ball mill pinion ,SAG mill 32 ft single drive The natural progression in gear/pinion mill drives: The QdX4TM Mill Drive provides the next. Live Chat. ... Pinion Drive Sag Mill , 22 x 7 SAG Mill , outotec mw ball mill dimensions working of central drive ball mill , installation twin ...

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