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 – INSUFFICIENT BACKLASH. Move the mill gear away from the pinion and check for proper backlash per separate instructions. Cause C – OUT OF LEVEL.
Pinion Bearing Vibration In Cement Mills. Ball Mill Vibration Problems. vibrations on tube ball mill pinion gear bearings High vibrations on a ball mill AMP Maintenance 2011125 Hello everyone I have a problem with high levels of vibration at the supports of the pinion fixed and floating bearings of the cement ball mill Chat Online errection of outlet journal bearing for cement mill .
Number of teeth on gear. . Gear speed, rpm.. Ratio, or Rp/Rg. . ... pitch line runout in both a 98 tooth gear and a 65 tooth pinion. The problem was readily apparent as the audible noise of the ... fault exists on both the gear and pinion, the maximum effect on vibration will be noted when the respective faults of …
Review used oil analysis data or abnormal vibration data from customer. Verify that the gearbox drawings, disassembly tools and adequate inspection facilities are available. Ask for as much background information as possible, including manufacturer's part numbers, gear and bearing runtime (hours), service history and lubricant type.
The drive assembly is the mechanism that causes the drum to rotate. Several options are available here: direct drive setup. A chain and sprocket setup are ideal for smaller rotary drums, running up to 75 horsepower. Gear and pinion drive assemblies are reserved for more heavy-duty applications, running above 75 horsepower.
ball mill girth gear high vibration problem case study. Replacement girth gears made of ductile cast iron for cement mills. ... steel girth gears to 9,000 kW single pinion drive, ... published papers, articles or case studies .... leading provider of coal centrifuges, vibrating. ... all drive problems enable FLENDER to offer specific solutions ...
by finding problems early Issues that are not caught early can lead to breakdowns and unplanned downtime, significantly increasing repair costs and production losses. 1. Mill Visuals and Vitals Quickly catch visual failures, oil contamination and slurry leaks 2. Mill Mechanical Verification Next level inspection with specific adjustments and ...
High vibrations on a ball mill. Hello everyone, I have a problem with high levels of vibration at the supports of the pinion (fixed and floating bearings) of the cement ball mill. The kinemantic scheme with the measurement locations and several representative spectra and timewaves are in the attched file. The dominant vibrations are in the ...
Pinion Bearing Vibration In Cement Mills. Ball Mill Girth Gear High Vibration Problem Case Study pinion bearing vibration in cement grinding machines about problem of cement mills pinion vibrations Failure analysis of air cooled condenser gearbox gtgtThe problem was identified by maintenance engineers through vibration monitoring of gearboxcondenser ACC of a power plant in a very reputed ...
I plan on checking if the DS -flange and flange-yoke bolts are torqued uniformly. Is it possible that the differential pinion bearing was damage by the loose, sloppy driveshaft, and the differential is the source of my vibration? When I removed the yoke from the DS to the transmission I noticed a lot of wear on the yoke shaft that was non-uniform.
— Single pinion and girth gear (up to 3,900 kW) — Double pinion and girth gear (up to 5,000 kW) — Combi lateral drive (up to 8,000 kW) — Central drive (up to 12,000 kW) FCB B-mill, a ball mill technology which benefits from one century of experience — Most adapted mill to grind abrasive materials — Easy maintenance
The condition of the mill had become so bad that they decided to reverse the direction of the single pinion drive to continue running, but were still experiencing high vibrations. An engineer inspected the gear and discovered that the vibration levels were approaching unacceptable levels according to ISO 10816-1.
The mill drive system consists of the main mill motor, the main reduction gear box, mill pinion and girth gear. The mill is also equipped with a barring drive which is either connected to the main drive reduction unit or alternatively mounted at the back of the main motor. Refer to Figure 2 …
STG type gearbox was driven by 3-HP AC motor and with maximum input speed of 3600 rpm. Two AE sensors were placed near the output driving gears and three accelerometers were placed on the input drive pinion and at locations near the output driving gears. Hilbert-Huang Transform (HHT) was applied over vibration signals to extract gear fault ...
Retrofits for grinding mills - .com. Overheating a mill's gear and pinion can cause extensive and very costly damage. ... Illustrative example of components covered by engineered to order solutions in a ball mill. ... excessive vibration, oil or slurry leaks are all ....
18th IEEE International Conference on Control Applications Part of 2009 IEEE Multi-conference on Systems and Control Saint Petersburg, Russia, July 8-10, 2009 Transient Torsional Vibrations Control in the Geared Drive Trains of the Hot Rolling Mills Paul V. Krot Abstract — The excessive dynamic loads and shock be achieved by the application of an additional control loop vibration are ...
Drive system Girth gear drive and central drive are mechanical systems designed to reduce the motor speed to the working speed of the mill. Transmission is via gears. Gear units comprise basically : Fig. 1 - rotating parts with shafts and gears and - stationary parts, i. e . housings and bearings.
Maintenance and measurement. Preventive maintenance keeps production processes in operation. It calls for the regular, diligent inspection and measurement of rotary kilns and ball mills – the heart of the plant. From our extensive portfolio of maintenance services we can offer you a complete package of tailor-made solutions.
Pinion misalignment - poor contact, too much or too little backlash and root clearance, poor longitudinal relationship of the gear to pinion. Drive misalignment - couplings, drive components, and drive base misalignment. Gear misalignment - Axial and Radial. Insufficient protection from …
Mill Girth Gear High Vibration Problem Case Study. A case study has been conducted on the wear problem of a set of large helical gears of a ball mill used for cement production at the shiraz cement plant the ball mill has a nominal capacity of 80 t h −1 the overall diameter and length are respectively 4000 mm and 12990 mm the total weight of the ball mill when fully charged is about 280 t.
Tube Mills - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. IMPORTANT DATA TO DESIGN A TUBE MILL ROD TUBE MILLS BALL MILLS PEBBLE MILL CHAMBER-BALL MILLS CONCICAL BALL MILLS CONSTRUCTION OF A MILL - …
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
•Additional vibration data was collected from the motor & gearbox of the 1A Ball Mill Drive under no load. •To determine what problems (if any) existed with the drive, a comparison of the route vibration data between 1A & 1B Ball Mills was made as well as between loaded & unloaded data at 1A Ball Mill.
Tumbling mills are most commonly rotated by a pinion meshing with a girth ring bolted to one end of the machine (Figure 7.10). The pinion shaft is either coupled directly or via a clutch to the output shaft of a slow-speed synchronous motor, or to the output shaft of …
The solution to this problem is the one tooth difference planetary gear mechanism shown in Figure 2.7. This internal contact type planetary gear utilizes a circular arc tooth form internal gear and smooth trochoid type curve planet gears resulting in no tooth tip interference and large numbers of teeth in simultaneous mesh.
Subaru Center Differential Problems; ... The torque is then distributed through the bevel gear set directly to the drive pinion shaft and via the transfer drive and driven gears to the rear drive shaft. ... I have a very bad vibration when ever im stopped in gear. if i do a 360 deg turn, the vibration will be completely gone after straightening ...
Support drive, or direct drive setup. A chain and sprocket rollers bear the weight of the drum. setup is ideal for smaller rotary drums, running up to 75 horsepower. Gear and pinion drive assemblies are Flights reserved for more heavy-duty applications, running Available in several designs, material lifters, or lights, above 75 horsepower.
Figure 4: Two SAG Mills 24MW each and Two Ball Mills 16.4 MW each with Gearless Mill Drives For larger applications the well-proven Gearless Mill Drive (GMD) technology has shown to be very effective since its introduction in mining in 1980; currently in operation for horizontal mills up to …
WEG successfully tests dual-pinion ball mill drive WEG has successfully tested low-speed synchronous motors driven by frequency inverters for mills with dual pinions at its plant in Brazil. As a multinational company, WEG supplies a range of products to the mining industry for driving large mills, including low and high speed motors, gearboxes ...
Two spindles on each mill stand connect the pinion gearboxes to the primary upper and lower work rolls that compress the steel in a cold condition. Over time the surface damage to the steel from the spindle vibration (chatter) caused the operator to either slow the mill down, reducing production by 20% to reduce the vibration, or replace the ...
