POLY-V PULLEYS, VEE PULLEYS & BELTS - Industrial Bearing S

1 POLY-V PULLEYS ,VEE PULLEYS & BELTSPOLY-V PULLEYS ,VEE PULLEYS & BELTS20052005 RED-GO HOLLOW ROUND BELTING SPB & SPC SECTION VEE BELTSPAGE 2 INDEXPage 20 OPEN END VEE BELTINGPage 21 taper BUSHESPage 33 M SECTION VEE BELTSPage 18 SPZ & SPA SECTION VEE BELTSPage 19 VEE PULLEY & belt DRIVESPage 14 A SECTION VEE BELTSPage 15 B SECTION VEE BELTSPage 16 POLY-V PULLEY & belt DRIVESPage 4 J SECTION POLY-V PULLEYSPage5-6 L SECTION POLY-V PULLEYSPage7-10 SPA taper BORE VEE PULLEYSPage 21 SPB taper BORE VEE PULLEYSPage 22-23 C & D SECTION VEE BELTSPage 17 POLY-V BELTSPage 11 - 13 USEFUL INFORMATIONPage 34 All

2 Descriptions and dimensions as published are believed to becorrect, but subject to the possibility of printing errors. The rightis reserved by us or our suppliers to alter or modify dimensions ordesigns without dimensions in mm unless otherwise statedSPZ taper BORE VEE PULLEYSPage 27-29 SPC taper BORE VEE PULLEYSPage 24-26 Page 30-32 NOTESPage 35 Engineering &Manufacturing Co. Pty. OF POLY-V DRIVESPage 3 POLY-V Drives are the compact alternative to the standard Vee-Pulley Drives. Naismith Engineeringcarry all of the POLY-V PULLEYS and BELTS in this Catalogue on the shelf and if special diameter pulleysare required they can be made in our rubber BELTS are made from a highly abrasion resistant compound, have a fibre reinforced back forlateral stiffness as well as an elastomer structure in the V section of the belt for optimal is also a high-performance tensile member to provide better power features of the POLY-V drive systems include being able to transmit up to 600kW with just onebelt.

3 POLY-V BELTS can be up to 98% efficient. High speed ratios can be achieved, up to 20:1 with off theshelf sizes and up to 60:1 with special PULLEYS . Due to the single belt design, uniform tension is put onthe belt across all grooves. Noise levels can also be reduced by changing over to POLY-V drives. Lessmaintenance is required on POLY-V drives and you do not have the problem of one belt wearing fasterthan the other because there is only one of the PULLEYS that Naismith Engineering carry are made in Cast Iron, the smaller PULLEYS haveblank or pilot bores while the larger ones are machined to suit a taper lock.

4 POLY-V BELTS should be runon grooved PULLEYS for the best transmission of power, however flat PULLEYS can be used as idlers oreven drive PULLEYS if required. Due to the flexibility of the POLY-V belt , flat drive PULLEYS can also beplaced on the back side of the belt to make quite complicated serpentine drives all driven from the onedrive shaft. It should be noted that when using a flat pulley the transmittable torque will be contact Naismith Engineering with your of POLY-V DrivesEngineering &Manufacturing Co. Pty. 3 POLY-V is a multi rib belt drive whose special construction allows it to be used withvery small pulley diameters, reducing noise and vibrations.

5 It solves many driveproblems in a number of applications such as machine tools, wood workingmachines, fitness machines, compressors, fans etc. SIT PULLEYS have been designedto guarantee optimal drive performances and life. They are ideal high ratio or hightorque drives. With only 1 belt , tensioning is easy and you do not have to worryabout matching BELTS . For further information or help in selecting a drive contactNaismith PULLEYS & belt DrivesCharacteristics:Suitable for transmitting power up to approx. 600 kWWide range of section for every drive requirement:J,L&MSuitable for small size PULLEYS diameter (20 mm), achieving very highperipheral speed (up to 60 m/s)The belt can counter flex and work on the backsideWide range of PULLEYS for taper bush available from stock!

6 !!!! ,00010, 1000 JLMI dentifying a POLY-V PulleyTo identify a POLY-V pulley the following informationmust be known:Naismith Engineering carries small diameterpulleys in pilot bore and the larger diameters in taper is the distance from the centre of one grooveto the centre of the next groove. Naismith Engineeringstock the pitch sizes of J and L . M section pulleysavailable on of GroovesThe outside diameter of the pulleyBore:Pitch: :Identifying a POLY-V BeltTo size up a POLY-V belt the following information mustbe known:This is the distance from the centre of one grooveto the centre of the next groove.

7 Naismith Engineeringstock the pitch sizes of J , L & M .Number of GroovesThe pitch length of the belt expressed :Grooves:Pitch Length:PYB063J4J GroovesPoly LongL Section12 RibsEngineering &Manufacturing Co. Pty. 4 PitchThickness (B)Height (T)'J' 'L' J & L Section POLY-V Belts200J8 = (508mm Long), 8 Ribs840L16 = (2134mm Long), 16 RibsTBPitch J Section L SectionEngineering &Manufacturing Co. Pty. 5 Standard widths of:-Off standard widths areavailable on widths of:-Off standard widths areavailable on (B)Height (T)'M' M Section POLY-V BeltsTBPitch M SectionEngineering &Manufacturing Co.

8 Pty. = (3327mm Long), 8 RibsPAGE 6 Standard widths of:-Off standard widths areavailable on Groove4 GrooveC = = 71610 71610 71610 71610 81610 81610 81610 71108 - 82012 71108 - 62012 71108 - 62012 71108 - 62012 71108 - 92012 71108 - 92012 71310 - 92012 71310

9 - 92517 71610 - 92517 71610 - J Section POLY-V PULLEYS 4 GrooveEngineering &Manufacturing Co. Pty. 7 Type Groove8 GrooveC = = 71610 71610 71610 71610 81610 81610 81610 31108 - 82012 31108 - 62012 31108 - 62012 31108 - 62012 31108 - 92012 31108 - 92012 71310 - 92012 71310 - 92517 71610

10 - 92517 71610 - J Section POLY-V PULLEYS 8 GrooveEngineering &Manufacturing Co. Pty. 8 Type Groove12 GrooveC = = 21610 21610 21610 22012 22012 22012 72517 82517 21108 - 62517 21108 - 62517 21108 - 62517 21108 - 62517 21210 - 92517 21610 - 92517 21610 - 92517 21610 - 92517 21610