Spur Gears - Norfolk Bearings and Supply Company, Inc.

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Grooving 1. An oil feeder hole is normally sufficient for small bearings under light loads. The oil hole should be in a position to introduce the lubricant to the non-loaded area of the bearing. The lubricant will then normally be carried to the loaded area by the rotation of the shaft. For larger bearings under heavy loads, it may be desirable to facilitate the flow of lubricant to the pressure area by means of grooves machined into the bearing surface. 2. Type I or Type II grooves have proven adequate for most applications requiring an oil groove. In either case, the oil feed hole introducing the lubricant should always be located in the unloaded bearing area. Depth of oil groove is 1/8" max. if wall permits. On thin wall bearings depth of groove is normally less than 1/2" wall thickness. When applicable groove is located 1/8" from ends. Engineering Information Lubrication – BEAR-N-BRONZ (Continued) 3. Very long bearings may require two feeder holes connected by one straight (axial) groove. 4. Oil grooves should stop short of the bearing ends to minimize oil leakage. 5. Grease lubricants are normally restricted to applications subjected to heavy loads at low speeds. Grease should be distributed under pressure along oil grooves to the loaded area. Type VI or Type VII grooves may be used for grease lubrication. Below are illustrations of some popular styles of oil grooves: P-1930-BG 04/10 Boston Gear 800-825-6544 179 F
F Engineering Information Shaft Clearances The following graphs may be used as a guide to determine shaft clearance for proper running fit. SHAFT CLEARANCE IN INCHES .007 .006 .005 .004 .003 .002 .001 BOST-BRONZ MAXIMUM MEAN MINIMUM .000 0 .5 1.0 1.5 2.0 2.5 3.0 3.5 SHAFT DIAMETER IN INCHES APPROX. SHAFT CLEARANCE IN INCHES .030 .025 .020 .015 .010 .005 MINIMUM MAXIMUM Plastics BEAR-N-BRONZ 180 Boston Gear 800-825-6544 P-1930-BG 04/10 SHAFT CLEARANCE IN INCHES SHAFT DIAMETER IN INCHES .010 .009 .008 .007 .006 .005 .004 .003 .002 .001 .000 0 .5 1.0 1.5 2.0 MAXIMUM MINIMUM .000 0 .5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SHAFT DIAMETER IN INCHES MAXIMUM F-1 MINIMUM F-1
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A L T R A I N D U S T R I A L M O T
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Table Of Contents Stock Altered and
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With thousands of stock gears avail
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Custom Gearing “Request For Quota
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Custom Gearing Capabilities Gear Ty
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Gear Selection Stock Gears Spur Gea
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Product Selection / Reference Guide
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Boston Gear Helical Gears ■ Paral
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Boston Gear Worms and Worm Gears
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A Spur Gears 48 and 32 Diametral Pi
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A Spur Gears 10 and 8 Diametral Pit
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A Spur Gears 6 and 5 Diametral Pitc
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A Change Gears 20 Diametral Pitch (
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A Change Gears 12 Diametral Pitch (
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A Change Gears 8 Diametral Pitch (S
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A Drawn Pinion Wire 48, 32 and 24 D
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A Internal Gears 48 through 16 Diam
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A Spur Gears 48 Diametral Pitch (De
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A Spur Gears 32 Diametral Pitch (De
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A Spur Gears 6 and 5 Diametral Pitc
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A Internal Gears 64 through 24 Diam
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A Spur Gears Approximate Horsepower
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B Helical Gears 24 through 10 Trans
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B Helical Gears Selection Procedure
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B Helical Gears Approximate Horsepo
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C Miter Gears 48 through 20 Diametr
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C Miter Gears 8 through 4 Diametral
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C Bevel Gears 48 through 20 Diametr
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C Bevel Gears 12 and 10 Diametral P
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C Spiral Bevel Gears 30 through 8 D
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C Miter Gears Steel & Iron - Straig
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C Bevel Gears Steel & Iron - Straig
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C Notes 84 Boston Gear 800-825-6544
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D Worms & Worm Gears 48 Diametral P
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D Worms & Worm Gears 8 Diametral Pi
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D Worms & Worm Gears 4 Diametral Pi
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D Worms & Worm Gears Selection Proc
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D Worms & Worm Gears Steel-Hardened
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E Shaft Couplings FC Series Insert
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E Shaft Couplings BF Series Bost-Fl
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E Shaft Couplings SCC Series Clampi
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E Shaft Couplings FCP Series Sleeve
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E Universal Joints J/JS Series Bore
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E Universal Joints UJNS/UJNL Series
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E Universal Joints JP Series Single
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E Setscrew Collars SC/SSC Series St
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E Clamping Collars CSC/CSSC/CASC Se
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E Thrust Washers Steel and Stainles
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E Grooved Pulleys G1200 Round Belt
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E Miniature Timing Belts and Pulley
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E Miniature HTD ® Timing Belts 3M
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E Timing Belt Pulleys PA Series For
Page 133 and 134: E Timing Belt Pulleys PLB Series Fo
Page 135 and 136: E Miniature HTD ® Timing Belts 5M
Page 137 and 138: E Timing Belt Pulleys PA Series For
Page 139 and 140: E Timing Belt Pulleys PLB Series Fo
Page 141 and 142: F BOST-BRONZ Oil-Impregnated Sinter
Page 151 and 152: F BEAR-N-BRONZE 660 Cast Bronze Bea
Page 159 and 160: F Bronze Bearing Emergency Banks Ac
Page 161 and 162: F BOStonE F-1 Glass Filled Teflon B
Page 163 and 164: F RULON ® 641 Bearings Boston Gear
Page 165 and 166: F BOStonE Molded Plastic Bearings B
Page 167 and 168: F BOStonE Molded Plastic Bearings R
Page 175 and 176: F BOStonE Molded Plastic Bearings G
Page 177 and 178: F BOStonE Molded Nylon Bearings Pla
Page 179 and 180: F Engineering Information Sleeve Be
Page 181 and 182: F Engineering Information Sleeve Be
Page 183: F Engineering Information Lubricati
Page 187 and 188: F Engineering Information Machining
Page 189 and 190: F Anti-Friction Bearings Ball Beari
Page 191 and 192: F Anti-Friction Bearings 1600 Serie
Page 197 and 198: F Anti-Friction Bearings Flanged 40
Page 199 and 200: F Anti-Friction Bearings 600 Series
Page 203 and 204: F Self-Aligning Bearings KF Female
Page 205 and 206: F Self-Aligning Bearings CMHD Male/
Page 207 and 208: F Self-Aligning Bearings HME Male/H
Page 209 and 210: F Self-Aligning Bearings LHA-LHB-LH
Page 211 and 212: F Self-Aligning Bearings LS/LSS Ser
Page 213 and 214: F Engineering Information Engineeri
Page 215 and 216: F Engineering Information Engineeri
Page 217 and 218: F Mounted Bearings Replacement Bear
Page 219 and 220: F Mounted Bearings Replacement Bear
Page 221 and 222: F Mounted Ball Bearings PS Series P
Page 223 and 224: F Mounted Ball Bearings L/H Series
Page 225 and 226: F Mounted Ball Bearings SL/SH Serie
Page 227 and 228: F Mounted Ball Bearings MB Series P
Page 229 and 230: F Mounted Ball Bearings XL2/XL3 Ser
Page 231 and 232: F Mounted Ball Bearings F/T Series
Page 233 and 234: F Mounted Ball Bearings SF/ST Serie
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F Mounted Ball Bearings MBP Series
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F Mounted Bearings TU Series Take-U
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F Engineering Information Analysis
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F Engineering Information Mounted B
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F Engineering Information Applicati
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F Notes 240 Boston Gear 800-825-654
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G Roller Chains Description of Roll
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G Roller Chains ANSI Standard Doubl
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G Engineering Information Conveyor
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G Engineering Information Conveyor
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G Notes 250 Boston Gear 800-825-654
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G Roller Chains Hollow Pin Single a
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G Ladder Chain Steel-Stainless Stee
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G Chain Pullers Chain Breaking Tool
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H Chain Drives Roller Chain Sprocke
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H Roller Chain Drives Horsepower Ra
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H Roller Chain Drives Horsepower Ra
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H Roller Chain Drives Selection SPE
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H Miniature Chain Sprockets Single
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H Roller Chain Sprockets Single Str
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H Block Chain Sprockets Type B Sing
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H Ladder Chain Sprockets Type B Sin
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H Roller Chain Drive Tensioners Typ
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H Roller Chain Drive Tensioners Typ
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I Engineering Information Spur Gear
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I Engineering Information Helical G
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I Engineering Information Helical G
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I Engineering Information Miter and
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I Engineering Information Worms and
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I Engineering Information Couplings
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I Engineering Information General M
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I Engineering Information Sprockets
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I Engineering Information Sprocket
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I Engineering Information Temperatu
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I Engineering Information Metric Co
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I Engineering Information Applicati
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I Index to Catalog Numbers Catalog
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I Index to Catalog Numbers Catalog
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Altra Industrial Motion All Custome
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