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ISO grade 150 hydraulic oil with rust and oxidation inhibitors and anti-wear additives.
Four gallons (15.2 liters) of oil required for the drive head.
The drive head oil should be changed every 4000 operating hours.
Use Extreme pressure (EP) multipurpose grease with NLGI No.2 rating.
Apply 25 grams or approximately 25 pumps from a standard lever-type grease gun.
Lubricate the crankpin bearing every 750 operating hours.
Disconnect drag link, remove grease fitting, and unscrew cap screws from clamping sleeve.
Loosen clamping sleeve, remove belt guard/v-belts, and lift box frame assembly.
Remove drive head from base and drain oil from housing and pump sump.
Remove lock wire, cap screws, baffle, and gasket from crankshaft.
Remove screw, snap ring, press crankpin out, remove felt seal and bearing.
Remove sheave, bushing, key, inspection plate, oil seal cap, and pinion shaft.
Remove cap, lock nut, bearing clamp plate, beveled pinion, and bearings.
Remove pump sump assembly, oil pump assembly, drive head cover, and crankshaft assembly.
Remove housing cover, snap ring, eccentric ring, outer geroter, friction plug, spring, and inner geroter.
Remove Woodruff key, bottom snap ring, and pump shaft.
Remove oil pump drive flange, lower rest bearing, bearing spacer, minor balance weight casting and bearing.
Remove bearing, major balance weight assembly, and major balance top sleeve.
Remove oil baffle, drive head cover, upper crankshaft bearing, and beveled ring gears.
Check key fit, clean oil hole, place cover, apply oil, place upper bearing.
Bolt oil baffle, insert crankshaft key, drive major balance top sleeve, fit major balance weight flange.
Bolt bevel ring gear, press minor balance bearing, place minor balance weight spacer, bolt minor balance weight casting.
Lower minor balance weight casting, place roller bearing, place lower bearing spacer, press spherical roller bearing, bolt oil pump drive flange.
Press inboard bearing, install beveled pinion, bolt bearing clamp plate, run lock wire.
Press outboard bearing, press pinion shaft, install lock washer/nut, attach cap.
Pack bearing with grease, apply oil, press bearing into housing, turn crankpin, apply oil to felt seal.
Lift housing/bearing over crankpin, press housing/bearing, install snap ring, install spacer/lock/screw, fill space with grease, install crankpin bearing assembly.
Bolt lower bearing rest casting, place shims/collar, apply sealant/gasket, lift crankshaft assembly.
Rotate minor balance weight, lower crankshaft assembly, guide bearing, bolt cover, remove wooden blocks.
Backlash between gears and pinion should be set per Table 1, using shims for adjustment.
Lock pinion shaft, use dial indicator on gear teeth or ROTEX Backlash Checking Kit.
Balance weights must be in correct relationship, major keyed, minor free to rotate.
Lift opposite side of drive head housing to allow weights to swing into position by gravity.
Bolt bearing rest casting, oil pump assembly, oil drain plugs, sump assembly, and oil seal cap.
Add oil, replace breather vent, rotate crankshaft to check oil flow.
Bolt drive head to base, lower box frame, reconnect drag link, install sheave and start machine.
The Rotex 70 Series Drive Head Assembly, model number 25200, is a critical component of high-performance screeners, designed to provide the necessary motion for efficient material separation. This assembly is engineered for durability and features a design that minimizes maintenance requirements, with all rotating parts mounted on anti-friction bearings and wear-prone components designed for easy replacement.
The drive head assembly's primary function is to convert rotational input from a motor (via a sheave and pinion shaft) into the complex gyratory motion required by the screener. This motion is achieved through a crankshaft assembly that incorporates major and minor balance weights. These weights are crucial for counteracting the dynamic forces generated during operation, ensuring smooth and stable performance of the screener. An integrated oil pump system lubricates the internal components, ensuring longevity and efficient operation. The assembly is designed to be robust, handling the continuous stresses of industrial screening applications.
The Rotex 70 Series Drive Head Assembly is designed for integration into screening machines, providing the necessary mechanical drive. Its robust construction ensures reliable operation in demanding industrial environments. The assembly's design allows for precise adjustment of balance weights and gear backlash, which are critical for optimal performance and minimizing vibration. The ability to position balance weights according to the screener's mounting configuration (left-hand or right-hand drive) ensures proper dynamic balancing. The oil pump system ensures continuous lubrication, which is vital for the longevity of internal components. The use of specific oil and grease types, along with defined change intervals, is crucial for maintaining the assembly's performance and extending its service life.
The drive head assembly is designed with maintainability in mind.
General| Brand | Rotex |
|---|---|
| Model | 70 Series |
| Category | Industrial Equipment |
| Language | English |
