V-Class Table 2 or 3 3 to 10 hour Service Factor 1.25 1.50 1.75 2.00 Service Factors Table 1 — Mechanical Service Factor Conversions 3 to 10 Hours per Day Multi-Cyl. Engine † 1.50 1.75 2.00 2.25 Over 10 Hours per Day Multi-Cyl. Engine † 1.75 2.00 2.25 2.50 Intermittent–Up to 3 Hours per Day † Motor 1.25 1.25 1.50 1.75 Multi-Cyl. Engine † 1.25 1.50 1.75 2.00 † For applications operating one half hour or less per day or applications driven by single cylinder engines, refer to the Factory. Occasional and Intermittent Service or Engine-Driven Applications For multi-cylinder engine-driven applications and all applications operating intermittently up to three hours per day, refer to Table 2 or 3 for the Service Factor of the same application operating three to 10 hours per day. Next, in the first column of Table 1, find this same Service Factor. Then, to the right, under the desired hours service and prime mover, locate the converted Service Factor. For example, from Table 3, the Service Factor is 1.25 for a uniformly loaded belt conveyor. From Table 1, for the same application, the following are the Service Factors for various conditions. 1. Engine driven three to 10 hours per day; use 1.50 Service Factor. 2. Engine driven up to three hours intermittently; use 1.25 Service Factor. 3. Motor driven up to three hours intermittently; use 1.25 Service Factor. Mounting Position — Standard mounting positions for types VP & VR are with the input and output shafts horizontal. VP & VR Allowable mounting angles for standard oil levels are: Bridge Slope Kiln Slope ± 2° ± 4° Consult the Factory for other angles. For electric motor, steam turbine or hydraulic motor drives, recommendations are MINIMUM and normal conditions are assumed. Table 2 — Mechanical Service Factors listed by Industry Service Industry BOTTLING AND BREWING Bottling Machinery ............... Brew Kettles, Continuous Duty ...... Can Filling machines ............. Cookers—Continuous Duty ........ Mash Tubs—Continuous Duty ...... Scale Hoppers—Frequent Starts .... CLAY WORKING INDUSTRY Brick Press ..................... Briquette Machines ............... Clay Working Machinery........... Pug Mills ...................... DISTILLING .............. . DREDGES Cable Reels, Conveyors ........... Cutter Head, Jig Drives & Pumps .... Maneuvering Winches............. Screen Drives ................... Stackers, Utility Winches........... FOOD INDUSTRY Beet Slicers..................... Bottling, Can Filling Machine ....... Cereal Cookers .................. Dough Mixers, Meat Grinders....... LUMBER INDUSTRY Barkers—Spindle Feed............ Barkers—Main Drive ............. Burner......................... Main or Heavy Duty............... Main Log....................... Re-Saw Merry-Go-Round .......... Slab........................... Transfer........................ Chains—Floor .................. Chains—Green.................. Cut-Off Saws—Chain & Drag ...... Debarking Drums ................ Feeds—Edger................... Feeds—Gang ................... Feeds—Trimmer................. Log Deck....................... Log Hauls—Incline, Well Type ...... Log Turning Devices .............. Planer Feed ..................... Planer Tilting Hoists . . . . . . . . . . . . . . Rolls—Live—Off Bearing— Roll Cases...................... Sorting Table, Tipple Hoist ......... Transfers—Chain & Craneway ...... Tray Drives ..................... Hour Hour 1.25 1.25 1.25 1.25 1.25 1.25 1.75 1.75 1.25 1.25 2.00 1.75 1.75 1.25 1.25 1.25 1.25 1.25 1.25 1.75 1.25 1.50 1.75 1.25 1.75 1.25 1.50 1.50 1.50 1.75 1.25 1.75 1.25 1.75 1.75 1.75 1.25 1.50 1.75 1.25 1.50 1.25 Bridge Slope Kiln Slope Oil Well Pumping ................ Refer to Factory Paraffin Filter Press............... Rotary Kilns .................... 1.25 1.25 PAPER MILLSn Agitator (Mixer).................. Agitator for Pure Liquids........... Barking Drums, Barkers—Mech. .... Beater ......................... Breaker Stack ................... Calender ....................... Chipper........................ Chip Feeder..................... Coating Rolls ................... Conveyors— Chip, Bark, Chemical ............. Log (incl. Slab) .................. Couch Rolls .................... Cutter ......................... Cylinder molds . . . . . . . . . . . . . . . . . . Dryers — Paper Mach. & Conveyor Type ...... Embosser ...................... Extruder........................ 1.25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.50 1.50 1.50 1.50 1.25 2.00 1.50 1.25 1.25 2.00 2.00 1.25 1.25 2.00 1.25 2.00 1.25 1.25 1.25 1.50 1.25 1.25 1.25 1.25 1.25 1.50 2.00 2.00 1.50 1.50 See Brewing 1.25 1.50 2.00 2.00 2.00 1.50 1.50 1.25 1.25 1.50 1.50 1.75 Carriage Drive................... Refer to Factory Conveyors 1.50 1.50 2.00 1.50 2.00 1.50 1.50 1.75 1.75 2.00 1.50 1.75 1.50 1.75 1.75 1.75 1.50 1.50 1.75 1.50 1.75 1.50 Veneer Lathe Drives .............. Refer to Factory OIL INDUSTRY Chillers ........................ 3 to 10 Over 10 Industry Fourdrinier Rolls— Lumpbreaker, Wire Turning Dandy & Return Rolls . . . . . . . . . . . . . . . . Jordan......................... . . . Kiln Drive ...................... . . . Mt. Hope & Paper Rolls ........... . . . Platter . . . . . . . . . . . . . . . . . . . . . . . . . . . . Presses (Felt & Suction) ........... . . . Pulper (Continuous) . . . . . . . . . . . . . . . . . Repulper (Heavy Shock) ........... . . . Reel (Surface Type) ............... . . . Screens Chip & Rotary................... . . . Vibrating ....................... . . . Size Press ...................... . . . Super Calenders n .............. . . . Thickener & Washer AC Motor ...................... . . . DC Motor ...................... . . . Vacuum Pumps.................. . . . Wind & Unwind Stand............. . . . Winders (Surface Type)............ . . . Yankee Dryers ................. . . . PLASTIC INDUSTRY Batch Drop Mill, 2 smooth rolls ..... 1.25 Calenders ...................... 1.50 Compounding Mills .............. 1.25 Continuous Feed, Holding & Blend Mill ...................... 1.25 Extruders....................... 1.50 Variable Speed Drive.............. 1.50 Fixed Speed Drive................ 1.75 Intensive Internal Mixers Batch Mixers.................... 1.75 Continuous Mixers . . . . . . . . . . . . . . . 1.50 RUBBER INDUSTRY Batch Drop Mill, 2 smooth rolls 1.50 Calenders ...................... 1.50 Cracker, 2 corrugated rolls ......... 2.00 Cracker Warmer—2 roll. 1 corrugated roll ............... 1.75 Extruders Continuous Screw Operation ....... 1.75 Intermittent Screw Operation........ 1.75 Holding, Feed & Blend Mill— 2 Roll ......................... 1.25 Intensive Internal Mixers Batch Mixers.................... 1.75 Continuous Mixers . . . . . . . . . . . . . . . 1.50 Mixing Mill—2 smooth rolls (if corrugated rolls are used. use Cracker Warmer service factors) ... 1.50 Refiner—2 roll .................. 1.50 SEWAGE DISPOSAL Bar Screens..................... 1.25 Chemical Feeders ................ 1.25 Collectors . . . . . . . . . . . . . . . . . . . . . . 1.25 Dewatering Screens .............. 1.50 Scum Breakers .................. 1.50 Slow or Rapid Mixers ............. 1.50 Thickeners...................... 1.50 Vacuum Filters .................. 1.50 SUGAR INDUSTRY Cane Knives, Crushers ............ . . . Mills (low-speed end)............. . . . TEXTILE INDUSTRY Batchers, Calenders .............. 1.25 Card Machines .................. 1.25 Dry Cans, Dryers ................ 1.25 Dyeing Machinery................ 1.25 Nappers, Pads................... 1.25 Slashers, Soapers, Spinners, Tenter Frames, Washers,Winders .... 1.25 1.50 1.50 1.50 1.25 1.50 1.25 2.00 2.00 1.25 1.50 2.00 1.25 1.25 1.50 1.25 1.50 1.25 1.25 1.25 1.25 1.50 1.25 1.25 1.50 1.50 1.75 1.75 1.50 1.50 1.50 2.00 1.75 1.75 1.75 1.25 1.75 1.50 1.50 1.50 1.25 1.25 1.25 1.50 1.50 1.50 1.50 1.50 1.75 1.75 1.50 1.50 1.50 1.50 Knitting Machinery ............... Refer to Factory Looms, Mangles, 1.50 Range Drives.................... Refer to Factory 1.50 WINDLASS............... . Refer to Factory ★ Service Factors for paper mill applications are applied to the nameplate rating of the electric drive motor at the motor-rated base speed and are consistent with those shown in TAPPI standards. Anti-friction bearings only. A service factor of 1.25 may be applied at base speed of a super calender operating over a speed range of part constant power and part constant torque where the constant power speed range is greater than 1.5 to 1. A service factor of 1.25 is applicable to super calenders operating at constant torque over the entire speed range or where the constant power speed range is less than 1.5 to 1. Hour Hour 3 to 10 Service Over 10 4 Catalog 171-110
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Rexnord Falk V-Class Gear Drives Catalog
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