how to align ball mill pinion to drive motor. SAG mill, ball mill, ring gear, dual pinion, drive systems, variable speed .... even load sharing between the
Aug 25, 2016 High vibration on the ball mill drive train A and B. We are experiencing high vibration on our dual drive ball mill. The high vibration is on the motor DE bearing on axial direction. Dominant frequency is girth and pinion gear mesh. See attached spectrums and trends. Gearbox hold-down bolts are breaking due to high vibration.
Rolling Mill Drives. David Brown Santasalo has extensive experience in the design and manufacture of primary drives for pinion stands, for both hot and cold rolling mills and for new and existing applications. We can offer total design
The Pinion stand mill drive (Main drive) is fitted with high quality roller bearings mounted in metal cages ideally suited to the specified speeds of rotation. After sandblasting operation, the housing was painted and treated with epoxy primer, then coated internally with an oil-resistant paint, and externally with a finish colour as ...
SKB gear can offer all kinds of bevel gear machines, we can offer bevel gear,ring gear and pinion to customs, we also can offer rolling Mill transmission/drive gear. SKB gear has extensive experience in designing and manufacturing primary drives for pinion stand in both hot and cold rolling mills. Further by Utilising experience generated throughout our longstanding history in
Oct 08, 2012 ABBs innovative dual-pinion mill drive system helps to minimise mechanical wear on ring gear mills, reducing downtime and repairs while increasing the availability of grinding process equipment. Operating on low-speed, with motors driving the pinions directly, no gearboxes are required.
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 for a schematic of the mill drive system.
In this type of application, the pinion is mounted on pillow blocks driven by a low-speed motor or a motor and en-closed gear drive. The gear is mounted on the mill using a flange bolted con-nection (see Figure 2 for one type of flange installation). Both the center
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. Con gured in a twin
Our Ball Mill has the following tooth counts Pinion 18 teeth 1 x 2 x 3 x 3 Bull 226 teeth 1 x 2 x 113 (113 is prime). Thus, the factor common to both of these gears is 2 (improper set). Since we have a common factor other than one between the two gears on the ball mill we can expect to see the appearance of fractional
Hi Observing high vibs on pressing and lifting pinion DE and NDE bearing on a ball mill. Motor and main GB drive are OK. Clear predominant gear mesh frequency is appearing in the spectrum along with harmonics and side bands. But 1st GMF is predominant. side bands with pinion speed is seen. no GG speed side band was observed Some of the vib data, spectrums and photos
Apr 27, 2020 How do you measure the root clearance between a girth gear and a pinion of a grinding ball mill and what is the recommended root clearance. This ball mill uses helical gears(i.e. 284 teeth girth gear with a 24 teeth pinion).
We recently designed a large twin-drive gearbox for a leading Italian rolling mill.. It is a large pinion stand mill drive gearbox five-stand Tandem, weighing 40,000 kg, intended for a rolling mill.. Some technical data Below are photos of the fully mounted twin-drive gearbox installed at Galbiatis assembly shop.
Ball Mill VIEW ALL INVENTORY Used Machinery for Sale . allis chalmers ball mill, 10diameter (3082 mm) x 18long (5486 mm), wet overflow type, serial c2482. complete with bull gear and pinion drive through speed reducer.
The main motor is connected to one side of the gear unit, while the auxiliary drive is connected to the other side. The pinion at the mills girth gear can be connected via a double-jointed coupling with spacer to ensure the adjustability of the pinion. Single pinion drives are supplied in both fixed and self-aligning design.
Pinion mill drives are widely used in the mining industry to grind materials to a requested size. If the equipment is operating at optimum efficiency, this has positive impact on production and operating economics. Drive solutions are needed for speed and torque control. Among the resulting operational benefits, longer maintenance intervals and lower energy costs are 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
Jan 14, 2020 The cost of edge drive is low, but the pinion needs to be replaced every 2-5 years. Edge drive is mainly used in coal mills and mills with small power. The girth gear(big ring gear) and pinion are the key of the edge transmission device. Their reliable operation is directly related to the stable production of the mill.
Improve your open gears with reliable pinions that function smoothly. Manufactured with maximum precision, our MAAG GEAR Pinions are customised for your mill and kiln drive application and designed to work harmoniously with girth gears delivering smooth, reliable operations. What we offer.
Ring-geared mill drive system. High performance and flexibility in grinding. Decreasing global mineral resources, exploitation of lower ore grades in more remote locations and extreme environmental conditions lead to increased material processing and potential rise in CAPEX. The need for reliable and robust grinding solutions is driving the ...
SAG mill designs now include a single pinion drive that is used to transmit 5.6 MPa (7500 hp) to a mill. Consequently, it is now possible, with a twin pinion drive, to have power transmission delivering I 1.8 MPa (15,000 hp) to a mill. This power level is now approaching that available through the gearless drive system. Consequently, the ...
Dual pinion high-speed mill drive (with gearbox) and dual-pinion low-speed mill drive (without gearbox). By using the latest generation medium voltage frequency converter drives of ABB as shown in figure 2, with exclusive DTC (direct torque control) technology, these demands can not only be reached, but even exceeded.
I have an issue with a gear drive on a ball mill. 2XGM is rising and i have sidebands at 107cpm and I dont know why they are at 107 (not relevant to any turning speeds ect.) I checked the root clearance a week ago and the inboard is about a .066 smaller than the outboard. The pinion is 24quot long and has 24 teeth. It is obvious i have misalignment.And there is obvious spalling
Jun 13, 2016 A vibration survey was carried on this Ball Mill with a duel pinion drive. The vibration is high in all planes on both sides of the Mill or both pinion drives. The measurements were similar in velocity on the motor , gearbox and both pinion bearings. The recommendations for repairs was close to exactly the same for both drives.
Once Your Ball Mill Pinion Gearbox / Drive Solution arrives at our shop we immediately break it down in order to clean the components allowing us to further detect the faults through our industrial parts washer. Once quoted we can immediately begin with your Industrial Gear Drive Repair. National Gear Repair offers free freight and free quotes ...
Jan 01, 2011 The failure of the investigated pinion of the cement mill drive (No. 354881, tooth 28, module 36, diameter 1640 mm, width 1800 mm) occurred in the form of fatigue cracks and the spall of steel on the faces of several teeth.The failure was only located on one side of the pinion ().The teeth breakage began with cracking, which typically started at the roots of the teeth
Walks the walk, talks the torque. Supplied as an individual component or as a fully optimised system comprising a girth gear, mill drive gearbox, pinion and barring drive, our pinions are manufactured double ended for reversible and extended operating life.
The underfeed roll is driven by a pinion mounted on the non-drive end (also called the pintle end) of the top roll. Whereas the mill crown wheels all have an equal number of teeth the gears driving the underfeed roll are often speed reducing. the purpose of the mill pinions is to transmit torque from the top roll to the other mill rolls.
Patent US8162246 - Multiple safety element torque limiter - Google ... Apr 24, 2012 ... A displaceable drive ball safety element type torque limiter is installed in a variable speed AC motor drive crusher mill drive which can include ... crusher mill driven by a ring gear and one or more pinion gears each driven by ... against respective drive balls seated in aligned pockets in
of the inching reducer drive can be added to reflect efficiency losses. P inch P inch (1 (stage 0.01)) where stage is the number of reductions between the inching drive motor and the main drive input shaft (or mill pinion if direct driven) Round up P inch to the next standard motor power. This standard motor power becomes the incher ...
The combined motor to gearbox and gearbox to mill drive pinion misalignments resulted in a loss of end float within the gearbox, trapping the intermediate shaft gear. The 10.3-degree C temperature difference across the mill drive pinion gear was also considered excessive and indicative of severe pinion to girth gear misalignment.
At the other end of the pinion gear shaft is the fine feed gears. By turning the fine feed hand wheel, the pinion gear turns at a reduced rate causing the quill to move. In my case, the hand wheel connects to the Z axis drive gear box which in turn connects to the fine feed. What is Quill Backlash? If you looked inside the head of the mill with ...
Sep 22, 2019 Pinion module of ball mill Module is the ratio of pitch t to PI (m t/ PI) between the teeth of the same side of two adjacent gears, measured in millimeters. Modulus is one of the most basic parameters in gear manufacturing. The larger the modulus is, the higher the tooth is, the thicker the tooth is. National standard ball mill pinion module ...
Elastic mill sag by weight of mill balls and materia to grind A After temporary alignment of the teeth of pinion and girth gear with the mill empty, Fig. 8a, re-alignment should be undertaken with the mill filled with mill balls, i. e. with reference to the elastic sag in cold con- dition, Fig. 8b.