Most of our work since 2000 has been in developing grinding mill foundations to avoid vibration and unacceptable deflections. On a recent project for a plant in Peru, the client was told by the mill vendor that there was no need to do a systems (dynamic) analysis on the mill foundations because the mills on that project were gear driven rather than being driven by …

To further complicate things, grinding mills run at fairly low, and in some cases variable, revolutions per minute (RPMs). Under these conditions, traditional vibration measurement techniques alone do not yield clear answers. When combined with shock pulse measurement, on the other hand, these problems can be overcome in a solid technical solution.

the mill gear in inching mode N o_mill is the actual output speed of the mill gear in normal running mode P mill_motor is the actual power of the main drive motor or 2 x main drive motor for dual pinion drives. The power computed above is considered P inch = …

Mill load sharing – Maintains equal torques on dual pinion mills throughout the whole speed range. Controlled rollback – Prevents backlash and reduces downtime. Mill power ride through – Keeps the mill operating even under voltage dips. Over-duty cycle – Avoids unexpected downtime if the mill gets overloaded.

GROUTING SPECIALISTS Since 1977 we have been repairing foundations, installing new machinery, aligning, and regrouting all kinds of Reciprocating and Rotating Machinery. The foundation is the cornerstone for every single rotating asset. Poor bases are the main cause of many machinery vibration problems, reducing the life of the asset and this reliability.As the …

1- Wear pattern should be even along the teeth and around the pinion. Side wear tend to suggest misalignment while specific tooth wear point to hunting tooth, load shock, natural frequency or torsion vibration. The pictures suggest superficial fatigue flaking that should be part of a normal service life depending on load, hardness, and lubricant.

Re Pinion pitting. One of the main reasons for mill gear and pinion problems has been incorrect lubricant and/or incorrect application of lubricant. Misalignment of pinion with the gear can make the problem much worse. It is essential to get both lubrication and alignment right to avoid problems.

Torsional vibration and pinion load sharing on ball mills. Impact hammer testing to determine natural frequency. AssetManagement: RemnantLifeAnalysis-Structural Integrity-PerformanceMeasurement Proper planning of asset management and replacement is vital to business viability. Unexpected failures or downtime can lead to huge losses.

This white paper focuses on the work carried out by Alphatec Engineering in the rehabilitation of the mounting system (concrete foundation, anchoring, and grout) of a pinion-bearing pedestal of an 8,5 m ø x 3,8 m semi-autogenous grinding mill (SAG mill) driven by a 4000 kW electric motor. The project was part of a major intervention at two ...

The larger the mill, the greater are the stresses between the shells and heads and the trunnions and heads. In the early 1970s, maintenance problems related to the application of gear and pinion and large speed reducer drives on dry grinding cement mills of long length drove operators to seek an alternative drive design.

This customer then engaged our reliability team and an SKF IMx-S online Mill condition monitoring system was installed on their SAG mill. This system monitors the complete drive line and includes: Motor, three stage gearbox, pinion bearings, trunnion bearings, pinion and girth gears. Careful analysis exposed the gear fault

About I am a mechanical engineer with 12 years experience in fixed plant processing. I have a working knowledge of; asset maintenance task development through to life cycle costing, business improvement justification and implementation, technically scoping maintenance activities, completing QA/QC inspections on contracting works and risk management.

This extended from gearless mill drives to geared mills to mine winders. During this time my main interest was gearless mill drives ("GMDs") in South Africa and Chile. I consulted on 11 GMDs: a) 2 x 26', 17,5 MW BM b) 40', 21 MW SAG and 2 x 26', 16,4 MW BM c) 40', 22 MW SAG and 2 x 26', 16,4 MW BM d) 40' 22 MW SAG and 2 x 26' 16,4 ...

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

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 ring motor at Cadia. At Cadia, excessive vibration and deflections in the drive stator were encountered during commissioning of the mill and later ...

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 AG 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 ...

china small pinion gear for ball mills and rotary kilns gear, pinion gear, worm gear manufacturer / supplier in china, offering small pinion gear for ball mills and rotary kilns, small rack and casting and forging pinion gears, spare parts for ag/sag mill, ball mill used in copper mine and so on. how to install and align the girth gear and pinion prmdrivejan 14, 2020 ·there are two kinds of ...

ABB provides a variety of different types of drive solutions for the mining industry. For example, ring-geared mill drive (RMD) systems are good solutions when the power required to drive the mill is under 18 MW, i.e., a maximum of 9 MW per pinion (Fig. 4). Yet as tube mills grow in size in order to meet the demand for larger throughputs, the ...

Problems with gear spindles on rolling mills are a common occurrence. ... would be transmitted to the pinion stand gear assembly, due to ... any vibration conditions. The mill load was returned to for the tests. The spindle was designed for 1,225,200 in-lbs. of torque. The highest level of torque seen during the

gear driven mills pinion vibration issues. Bill Hankes, A-C Equipment Services, USA, explains why it ... Jul 19, 2017· sag mill pinion vibration problems lunarossa ristorante. Vibration Problems On A Tube Ball Mill problems sag mill slip ring motor stone Grinding Mill Gear Assembly Mineral Processing … Get More

vibration analysis systems ... problems with the lubricant such as ing ... Make pinion 2 HRC points harder than gear Use oil with high micropitting resistance Keep lubricant cool, clean, and dry Use high-viscosity lubricant Operate at high speeds

motor vibration problems on a tube ball mill ... diameter 28 MW gearless SAG mill . ... configurations exist, the pinion is usually driven by an electric ... Get More; gear driven mills pinion vibration issues - indoasiatic.co.in. ball mill motor causes of vibrations. ... ball mill drive motor bearing vibration – Grinding Mill ...

12%Thus, with condition monitoring of the SAG mill behaviors employing vibration, acoustic and thermal signals, the relevant parameter can be diagnosed and monitored. Accordingly, the mill may work on its optimum conditions without the concern of any imminent problem like mill congestions and unplanned stops.

Firstly, there was a serious flaw in the power configuration of the SAG mill and ball mill (both rated at 6000 kW with a single pinion drive). The capacity of the SAG mill was not fully utilized, as the actual operating power draw was only 3358 kW. This meant it was only operating at 56% of its maximum power, providing large room for improvement.

and pinion drives a main gear attached to the kiln. Typically the kiln is driven at speeds of 0.5 to 2 RPM, often with variable speed arrangements. Typical transit times for the lime through the kiln are from 1.5 hours to 4 hours under normal operating conditions. This is …

Sag Mill Trunnion Lube Ring Gear Lube. ball mill area lube piping . lube oil trunnion sag mill gurusrestaurant.in. ball mill area lube piping amonkarsin Ball Mill Area Lube Piping caesarmachinery » coal mill ring gear pinion vibration » sag mill trunnion bearing » lube oil trunnion sag mill » what coal mill . know more. Get help online

We sight herewith the most common problems, with their solutions. No. 1 – GEAR AND PINION VIBRATION. Cause A – EXCESSIVE BACKLASH. Move mill gear toward the pinion and check for proper backlash per separate instructions. Cause B …

table 1 - ball mill shaft speeds, expected forcing & fault frequencies ball mills, forcing frequencies (cpm) shaft speeds 1x rpm motor speed 1,191 ball mill pinion speed 226 ball mill gear speed 18 gearbox (between motor & ball mill) nb ftf bsf 2x bsf bpfo bpfi input brgs, skf#22330 15 491 3,192 6,384 7,358 10,507

Corporate. Polycorp specializes in the design and manufacture of engineered elastomeric parts that provide our customers with cost effective solutions to their corrosion, abrasion, impact, noise and vibration problems.

Axial Vibration Of Ball Mill Pinion. Vibration In Cement Mill loscugnizzobe. Axial Vibration Of Ball Mill Pinion nestech More likely the source is a failure on the pinion support High vibration on the ball mill drive The high vibration is on the motor DE bearing on axial How to reduce the horizontal vibration of cement Chat With Sales Cement Vertical Roller Mill.