The Outotec HSB upgrade is a modernization solution that helps maintain the optimal performance of grinding mill equipment. The proven design improves the durability and serviceability of both radial and axial hydrostatic bearing pads and is the standard arrangement in many new mill installations.

The SAG mill and the two ball mills are all second hand and have similar shell dimensions (17 ft × 22 ft D×L). ... the fluid-solid numerical simulatied model of a large-scale hydrostatic bearing ...

Mill bearings The type of support bearing is selected on the basis of mill size, intended duty and environmental conditions at the installation site. Outotec offers mills supported on a variety of bearing arrangements: hydrodynamic and hydrostatic journal, spherical roller, hydrodynamic and hydrostatic multi-pad bearings.

Answer (1 of 2): A hydrostatic bearing, a type of plain bearing, is a sliding bearing that uses a pressure pump to force a pressurized lubricant into a small gap between a bearing and a shaft. It is a kind of fully fluid-lubricated bearing in the non-completely fluid-lubricated sliding bearing, f...

Some SAG mills are also equipped with micro-motion devices. In order to facilitate the maintenance, there is a cylinder jacking device; for the large mill, in order to eliminate the static resistance torque at the start, a modern advanced technology such as a hydrostatic bearing is adopted to ensure the mill can operate safely.

A typical ball mill will have a drum length that is 1 or 1.5 times the drum diameter. Ball mills with a drum length to diameter ratio greater than 1.5 are referred to as tube mills. Ball mill application Ball mills are usually applied in the comminution stage as grinding machines to …

A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. [6] [7] The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor. [8] A SAG mill with a 44′ (13.4m) diameter and a power of …

Hydrostatic trunnion bearings were recently provided on large Semi-Autogenous Grinding (SAG) mills driven by wraparound motors assembled on the head to shell flanges. A conventional SAG mill would have a ring gear driven through one or two pinions.

Autogenous mills are also known as AG mills which is an acronym for autogenous grinding mills. It is so-called due to the self-grinding of raw materials inside the grinding chamber: a rotating drum throws large-sized raw materials in a cascading motion which causes impact breakage of larger particles and compressive grinding of finer particles.

1. SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. 2. SAG mill breaks the raw material into pieces for the further grinding. Ball mill is used to grind the pieces of raw material into. powder-like structures. 3.

Our market share in China exceeds 80% with the largest mills supplied to date being a Ø7.9m x 13.6m 2x8.5MW Ball Mill and a Ø11m x 5.4m 2x8.5MW SAG Mill, being the largest in China. CITICIC SAG/AG mills range in size below 12m diameter . They feature hydrostatic lubrication and can accommodate either a geared or gearless drive arrangement ...

Grid Type Ball Mill. Introduction. A traditional ball mill with discharging grid. Diameter of cylinder. 900mm～4500mm. Products improvement. Wet type grid ball mill is lined with Xinhai wear-resistant rubber sheet with excellent wear resistance, long service life and convenient maintenance. CONSULT.

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 ...

CEMTEC is up and coming as a leader in the world of grinding mill manufacturing having delivered ball mills up to 8.2m x 14m (27' x 46'). This is the largest ball mill in the gold mining sector to date. Cemtec supplys ball mills and rod mills for both wet or dry applications and you can be assured that quality, workmanship and attention to ...

2 parallel SAG Mills each feeding 2 parallel Ball Mills (4 total). Around 50,000 TPD total grinding circuit capacity.

AG Mill&Autogenous Mill&SAG Mill: 1.CITICIC can produce below 12m AG Mill&SAG Mill 2.AG Mills&SAG Mills:2.4x1.2~13x4.0m ZTIC can produce below 12m autogenous mills(AG Mill) and semiautogenous mills(SAG Mill).autogenous / semiautogenous mills(AG Mill &SAG Mill) are utilized to grind run-of-mine rock or primary crusher discharge.especially medium hard and …

Telfer Ball Mill Fabrication Supervision Provision of workshop supervision for the resolution of ball mill shell fabrication problems Newcrest Mining Limited, VIC Australia Cadia Valley Operations, NSW Modular discharger failure analysis Pad bearing inspection report for SAG mills Trunnion bearing advice and support

Ball Mill PINION SHAFT BEARINGS The first part of the mill that we will look at is the TRUNNION BEARING. This is a HYDROSTATIC BEARING which is a slow moving bearing that carries a heavy load. Usually it is constructed from Babbitt's metal.

Everything from shell-supported Ball Mills and Scrubbers on hydrodynamic bearings, to the largest trunnion-supported SAG Mills on hydrostatic bearings, each with their own unique design considerations specific to each site location. Some of the systems commonly supplied to the Mining industry are:

A SAG mill is characterized by its large diameter and short length. It rotates, tumbling its contents violently, causing a breaking action. ... The feed rate is limited by the horsepower available to turn the mill and the and the maximum weight the hydrostatic trunnion bearings which support the turning mill shell can withstand.

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.

SKF offers solutions for autogenous mills, ball mills, high pressure grinding rolls, rod mills, SAG mils and horizontal grinding mills. The solutions are designed to protect pinions and trunnions and prevent failure in these harsh operating conditions – helping you improve reliability and safety while reducing maintenance and operating costs.

Ball Mill Trunnion Bearing Lube System - 911 Metallurgist. Jan 10, 2016· On a 11'-6" x 22'-0" Ball Mill, the trunnion bearing lubrication system provides continuous low pressure flood oil for cooling and lubrication of the bearings, and high pressure oil for hydrostatic lift of the feed and discharge trunnions during start-up of the mill.

Capable of handling the world's heaviest loads in the harshest conditions, SKF hydrostatic shoe bearings operate with a supply of pressurized oil to support the massive loads. Designed to work with grinding mills, kilns and cement mills, these unique bearings offer: High carrying capacity. Unlimited support diameters.

China Luoyang Hengin Heavy Technology Co., Ltd. 1.Ball Mill Head Machining -1. 3.SAG Mill Head Drill Liners Hole. 3.Ball Mill Head Machining -2. 4.Ball Mill Head Machining -3. Grinding Mill Head processing. The mill generally uses hydrostatic bearings, and the journal is the main contact surface.

Ball mill： Ball mills are the most widely used one. Rod mill： The rod mill has the highest efficiency when the feed size is <30mm and the discharge size is about 3mm with uniform particle size and light overcrushing phenomenon. SAG mill: When the weight of the SAG mill is more than 75%, the output is high and the energy consumption is low ...

Lube Oil Trunnion Sag Mill - Wemles-Volwassenen-Den. On a 116 x 220 Ball Mill the trunnion bearing lubrication system provides continuous low pressure flood oil for cooling and lubrication of the bearings and high pressure oil for hydrostatic lift of the feed and discharge trunnions during startup of the mill System monitors including pressure switches and flow …

AG and SAG mills can be designed for dry or wet grinding. The bearings are hydrostatic slide or slide shoe bearings. Usually, AG and SAG mills have a gear rim/pinion or direct drive. Our p rodu ct portfolio includes sizes from a laboratory scale to a diameter of 10 meters or more. For transport reasons, these mills consist of several flanged parts.

Product Description . SAG Semi-Autogenous Grinding Mill Liner and AG Autogenous Grinding Mill Liner from H&G use Cr-Mo materials (AS2074 Standard), SAG Semi-Autogenous Grinding Mill Liner and AG Autogenous Grinding Mill Liner provides superior impact and wear resistance in all semi-autogenous milling applications.. To choose the right material for the right application …

Lubrication Point In Ball Mill. On a 11'-6" x 22'-0" Ball Mill, the trunnion bearing lubrication system provides continuous low pressure flood oil for cooling and lubrication of the bearings, and high pressure oil for hydrostatic lift of the feed and discharge trunnions during start-up of …