wear of the pinion surface should not exceed 30% of the tooth thickness. The wear of the tooth surface of the ball mill is not more than 25% of the tooth thickness. It can be used on the reverse side and should be scrapped when it is 1/2. deformation of the rim of the large gear of the ball mill should not exceed
WhatsApp: +86 18203695377is vital for the health of your mill. If not controlled, fluctuations can shorten the life of key components. Outotec solution: A trunnion bearing lubrication system retrofit featuring: • Customsized reservoir • Filtration system and heat exchanger • Temperature, flow, and pressure instrumentation Grinding retrofits Trunnion bearing
WhatsApp: +86 18203695377The "pinion power" is the mechanical power available at the output shaft of the motor and is related to the torque required to turn the mill and the mill speed. If you remember back to your electrical engineering courses, the power available in a circuit drops due to losses as you move down the circuit (because each electrical item causes a ...
WhatsApp: +86 18203695377Power drawn at the pinion is 448 kW, kWh/tonne (SAG mill) and 570 kW, kWh/tonne (ball mill) when processing mtph, for a total of kWh/tonne or % above the conventional estimate. ... Obviously, the SAG mill is consuming more and the ball mill less power than was predicted by the empirical method, but the overall ...
WhatsApp: +86 18203695377The SAG mill pinion energy, W SDT (kWh/t) and SAG discharge Bond ball mill work index, S dBWI (kWh/t), are then used to calculate the total energy to grind the ore from 80% passing 152 mm to 80% passing the client specified final product size P information, along with the ore specific gravity, is used to calculate necessary mill sizes and motor power in industrial applications.
WhatsApp: +86 18203695377At the same time, install the coupling half. 3. Fix the ball mill pinion gear unit and its bottom plate with bolts, paint red lead on the tooth surface of the small gear, turn the pinion shaft to make it mesh with the girth gear, and check the contact rate of the gear pair; The tooth length shall not be less than 50%, the tooth height shall not ...
WhatsApp: +86 18203695377homemade ball mill plans. By this drawing, it is suggested that a typical homemade laboratory rod mill or ball mill might be fabricated from 20 cm (8 inches) diameter schedule40 type 316 stainless steel pipe and would be about 38 cm (15 inches) long.. The plans show stainless steel grinding rods for this size of mill may be a graduated charge from 25 to 10 mm diameter (1 inch to 1/2 inch) but ...
WhatsApp: +86 18203695377The details of the ball mill motor are as follows. Power = kW or HP and the speed is 343 rpm. Load calculations (prior to failure analysis) The ball mill can experience failure based on the maximum normal stress theory as the working loads acting in the ball mill is concentrated across the seam of the mill periphery.
WhatsApp: +86 18203695377The pinion is a small gear with a matching tooth profile to the ring gear on the ball mill. From a bearing point of view, there are two bearings at the end of the shaft on the pinion and there are ...
WhatsApp: +86 18203695377Ball mill diameter = m (inside liner diameter = m) Ball mill load = 35%. Ball charge mass = 113 t. Ball size = 64 mm. Step 5. The diameter efficiency factor, F 3, in step 2 can now be determined using Equation () (Figure ). As the ID of the mill has been provisionally established as m, then ... Gear/pinion assembly on ...
WhatsApp: +86 18203695377The mill used for this comparison is a diameter by meter long ball mill with a 5000 HP drive motor. It is designed for approximately 90 per hour. This type twocompartment mill is a state oftheart shell supported cement finish mill. The torque and time requirements of the mill with the ball
WhatsApp: +86 18203695377Methods to Estimate AG/SAG Mill Grinding Power Requirements. (1) Using the results of SMC data. (2) Using SAG Power Index (SPI) data. (3) Using the 1989 Barratt method updated on Alex Doll's Web site (February 16, 2015) (3) Using Don Burgess' method (11th Mill Operators Conference 2012) They seem to give very different predictions for ...
WhatsApp: +86 18203695377includes a Bond Ball Mill Work Index test on SAG ground ore from the first stage of the test. The ratio of SAG pinion energy to Bond BM Wi is a key parameter in a SAG mill grinding circuit design, because this ratio controls the power split between SAG and ball mills at the target T80 transfer size( ). INTRODUCTION
WhatsApp: +86 18203695377A complete range of gear and pinion sets, inspections, design, installation and alignment services to drive your mill's performance Introducing a new name Outotec is proud to announce the launch of our new rebranded offer: Outotec Gears and Pinions. You can expect the same quality supported by decades of gearing and OEM expertise.
WhatsApp: +86 18203695377The pinion, usually integral with the pinion shaft, is cut from an alloy steel forging and heat treated prior to cutting the teeth. The pinion shaft is double ended so it is also reversible. All ball Mill gearing is designed in accordance with sound engineering principles and at the same time with consideration given to the long range economics ...
WhatsApp: +86 18203695377base are up to 40ft in diameter and ball mills are up to 26ft in diameter. The measured gross power draws from these mills are plotted against the model predictions in Figure 1. As indicated by this data base the accuracy of the model (1 standard deviation) is %. How to Use the Model . Inputs to the model are made in three windows, viz: Mill ...
WhatsApp: +86 18203695377The first step in girth gear alignment is preparation. The equipment must be shut down and deenergized, and safety protocols should be followed. Once safety measures are in place, the equipment should be cleaned, and any debris or dirt removed. The second step is measuring the alignment of the girth gear and pinion.
WhatsApp: +86 18203695377Ball Mill Sole Plate. This crown should be between .002″ and . 003″, per foot of length of sole plate. For example, if the sole plate is about 8′ long, the crown should be between .016″ and .024″. Ball Mill Sole Plate. After all shimming is completed, the sole plate and bases should be grouted in position.
WhatsApp: +86 18203695377fRunningin procedure Ball Mill Open Gear drive. 3. Process. •load with appr. 60 % of mill balls. •continuos spraying of runningin grease. •only little charge of raw material. •check load pattern after 5, 15, 30 minutes by. using a stroboscope. •realign if necessary.
WhatsApp: +86 18203695377The pinion shaft is the drive mechanism for a mill that moves the gear train that turns the mill assembly. It is mounted on roller bearings that have a decreased friction coefficient, which requires minimum lubrication and has excellent seal. ... Ball mills and conventional milling equipment are both used to grind materials into smaller pieces ...
WhatsApp: +86 18203695377Pinion 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 ...
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WhatsApp: +86 182036953771. Fill the container with small metal balls. Most people prefer to use steel balls, but lead balls and even marbles can be used for your grinding. Use balls with a diameter between ½" (13 mm) and ¾" (19 mm) inside the mill. The number of balls is going to be dependent on the exact size of your drum.
WhatsApp: +86 18203695377at the drive pinion(s). 4. Obtain the circuit throughput rate (dry tonnage). In the laboratory: 1. Conduct screen analyses of the circuit feed and product samples. 2. Conduct Wi test(s) on the circuit feed (see Section 8).. Use a 1,190 µm screen to close the rod mill Wi test for these purposes. Choose a closing screen for the ball mill
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WhatsApp: +86 18203695377Ignoring mechanical losses in this drive train, the power transmission at each stage, defined as torque x speed, is constant. The typical mechanical inching drive motor speed is around 1500 to 1800 RPM while the mill inching speed is in the order of to RPM. Thus, the gear reduction ratio between the inching drive motor and the mill is ...
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WhatsApp: +86 18203695377Optimize the performance and durability of your ball mill with our topquality pinion girth. AGICO Cement specializes in providing precisionengineered pinion girths for ball mills, ensuring smooth and efficient rotation. Explore our range of highquality options to enhance the reliability and efficiency of your ball mill. Choose the perfect pinion girth for your application and achieve ...
WhatsApp: +86 18203695377The main part of the ball mill mainly include feeding part, discharging part, a rotary part, a transmission part (reducer, small gear, motors, electrical control) and other parts. Hollow shaft adopts steel castings, the liner is detachable, slewing gear hobbing with casting, the cylinder body with wearresistant liner, with good resistance to wear.
WhatsApp: +86 18203695377There are many factors which effect grinding performance of ball mills like; liner design, speed, charge ratio, grinding media distribution, grinding media shapes. Grinding media directly effect ...
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