Dec 19, 2014· Advantages of SER drives for SAG mills. Friday, December 19, 2014 ... is typically used because gearboxes and pinion gears reach their present limit in size. Around 2MW and below, the squirrel cage/VVVF drive is simple and cost effective. ... I expect that this type of drive would be the most common large mill variable speed mill drive in the ...

Outotec Grinding technologies 007 the mill drive train to be brought closer to the mill, which in turn allows for smaller foundations and lower installation costs. Mill drives Most mills are driven by ring gears, with a 360° fully enclosing guard. The ring gear casting material is either nodular iron, cast or forged steel. These gears are usually

LOCKED CHARGE STARTS AND YOUR GRINDING MILL Authors: Jeff Belke Mitch Bertrand ... charge events because of the high amount of rocks and balls compared to fine ore. The pulp dischargers of a SAG mill continually pump the finer material out of the mill, lowering ... ring gear and the pinion. Some components will fail immediately and are easily ...

pinion on sag mill – Grinding Mill China. ball mill pinion shaft lubriion SCM SCM jaw crusher stone crusher SCM is one of the biggest manufacturers in, 2) SATP Customers want, and that is our goal, we produce ore crusher( installation twin pinion sag mill), mill, crusher, chat.

Copper concentrate throughput at Imperial Metal's greenfield project exceeds projections after installation of ABB's reliable lowspeed dual pinion ringgeared mill drive solution. ABB, leading power and automation technology group, has successfully installed and commissioned two lowspeed dual pinion ringgeared mill drive systems (RMDs) at the Red Chris gold and copper mine in northwest ...

Ringgeared mill drives Single and dual pinion. SAG and ball mill applications and are able SAG mill pinion gear alignment Reliability. GIRTH GEAR artecmachine. A: After temporary alignment of the teeth of pinion and girth gear with the mill empty, Fig. 8a, realignment should be undertaken with the mill filled with mill balls, i. e. with ...

Mill speed: RPM Liners: previously with steel liners Motor and Drive Motor: 3000 HP General Electric synchronous 4000 Volt, 200 RPM, 60 Hz Clutch: dual wide Airflex model 38VC1200 Inching drive: Bonfiglioli model B317M Gears and Bearings Bull gear: 332 teeth X 500 mm face width Pinion gear: 20 teeth X 500 mm face width

the direct drive also integrates the girth gear, drive pinion, and sliding shoe bearing with slide ring into a single housing. The threestage gear unit with integral auxiliary drive is installed separately. l. to r. Principle of the direct drive. Tube mill with direct drive. SAG mill with COMBIFLEX® drive .

dual pinion gear driven mill; a Drive 5 A 5000 HP, 1200 rpm synchronous induction motor with liquid rheostat and dc field excitation to a dual pinion gear driven mill. For the power supply in this study, four different scenarios will be considered as a power system in order

Benefits Variable speed capability Removal of limits of design power gear and pinion drives are practically limited to about 10,000 hp per pinion. at this time, there is no reasonable gear drive alternative for more than two pinions or above 20,000 hp. the best solution is the gearless mill.

Once the expanded mill operations begin in 2015, production is expected to average 582,260 oz/y of gold and Moz of silver for the next 10 years. ABB will deliver five dual pinion 2 x 9 MW lowspeed mill drive systems for two 36 ft SAG and three 26 ft ball mills, and one dual pinion (2 x MW) lowspeed drive system for a regrind mill.

Gears And Pinion For Ball Mill ... Two general classifications of gearing are used for ball Mill drives. These are the spur gear and. Ball Mill Gear Two general. to accommodate the pinion ... The grinding circuit consists of a SAG mill and two ball mills, all dual pinion gear · . China Pinion Gear Forging Steel for Ball ...

released its new QdX4 Mill Drive System for large SAG and ball mills today, promising increased operating efficiency and faster setup. "Traditionally, the mining industry has been somewhat reluctant to change, but change has occurred nonetheless and the industry is now encouraging innovations to operate in a more efficient way," Frank Tozlu, product manager of large grinding mills, .

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ringgear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor.

ABB ringgeared mill drives are to provide process and energy efficiency at Canadian gold mine. ABB has successfully commissioned four lowspeed dual pinion drive systems at the Detour Lake gold mine in Ontario. These systems include the largest lowspeed dual pinion mill drives in the world.

Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment. The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor characteristics. The main types are described and illustrated on these pages.

how to align a ball mill pinion and girth gear ? ore mineral crushers. girth gear with dual pinions alignment ? bulkonline forums. condition . and does any one . II84 The pinion and girth gears of two 9 MW ball mills exhibited severe scoring within five months of commissioning.

In ore processing, grinding is an essential step for the overall performance of any mine. That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands. Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since ...