Timing Belt Catalogue - feyc.eu

1 Timing Belt Catalogue INDEXNEXT INDEX BACKNEXT The Cross Ltd., reserve the right to change without notification dimensional and/or product specification shown in this Catalogue , and to add or delete any product fromthe range in the interests of product products shown in this Catalogue are offered subject to the standard Terms and Conditions of Sale ,copies on request. Cross Ltd., reserve copyright of thiscatalogue. No part thereof may be reproduced without prior & Morse was established in 1984 through the amalgamation of two long standing and well respectedcompanies in the Power Transmission Industry, Cross and Morse Cross & Sons was founded in 1870 in Birmingham, concentrating in the production of bicycle components underthe direction of the Cross family.

2 They moved to the current factory site in 1950 and developed into production of apopular range of roller chain sprockets and gearing. The competitive pricing and quality of product soon establishedthe Company as a major supplier to both Agricultural and Industrial Morse Chain Company was founded in 1894 also for the manufacture of bicycles in Pennsylvania, Thecompany moved into production of inverted tooth chain drives and established a manufacturing plant in London in1907, moving to the new Garden City of Letchworth, Herts. in 1918. The product range in the was developed toinclude Roller Chain and Sprockets, Couplings, torque limiters , Sprag Clutches and Timing Belt Drives, whilst in by acquisition Morse also included the Denver Gearbox Range and the Sealmaster Bearing 1987 Cross & Morse closed the Letchworth plant and centralised all production at the 10,000 sq.

3 Metre factory inGreat Barr, Birmingham where current production of Roller Chains, Sprockets, Gears, Timing Belt Pulleys, TorqueLimiters, Sprag Clutches and other specialised power transmission equipment is undertaken. In addition tomanufactured products, Cross & Morse are main agents for Morse-Emerson, ; and Stieber Formsprag,Germany; providing an extensive range of power transmission company operates a policy of continued assessment to develop and improve its products and customer pursuance of these objectives Cross & Morse has been successfully assessed by Lloyds, and is registered, as anapproved manufacturer of power transmission products to BS EN ISO BeltsIndexCROSS+MORSEP ower Transmission Solutions2we i v r evO sev i rD t l eBBelt Drive Selection:- Metric & Classical Belts3-972-62s t l eB r aen i L nee rG -83s t l eB enah t e r uy l oP -01no i ta l l atsnI t l eB54seta lP gn i pma lCClassical Timing Belts and Pulleys28-36 Classic Belts.

4 30- 9 2eg (XL, L, H)naR d r adna t S -31 Double Sided (XL, L, H) - Classical Timing Belt Pulleys:32-34) H , LL,X ( e r o B t o l i P -35-36)H, L( eroB repaT -Metric Timing Belts and Pulley 11-23 Metric Belts:-11-14e (3M, 5M, 8M)gnaR d r adna t S-15-16 Double Sided (5M, 8M, 14M)- Green Power Open Ended Belts26-29 Metric Timing Belt Pulleys:- Pilot Bore (3M, 5M, 8M, 14M) 17-20 - Taper Bore (5M, 8M, 14M) 21-22 Polyurethane Timing Belts and Pulleys 37-44 Platinum Timing Belts 46 Polyurethane Belts:39e ( , T5, T10, AT5, AT10)gnaR d r adna t S -44 s t l eB dednE nepO -Polyurethane Timing Belt Pulleys:- Pilot Bore ( , T5, T10, AT5, AT10) 40-43T24-25sehsuB e r oB r epaSpecial Belts32T54s r aB gn imiT74gn i t oohS e l buo rTiming Belt Catalogue_Cross + Morse 14/12/2010 12:17 Page 1 BACKNEXT INDEX BACKNEXT Timing Belt Drives2 Cross & Morse Timing Belt Drives take their place in industry as ahighly efficient, job proven medium for mechanical powertransmission.

5 Because these drives combine many importantexclusive characteristics, they present an entirely different conceptin the transmission of power. They are highly versatile in application and speed belt drives are positive and offer accurate synchronisationof speed, and often make possible worthwhile economies in thedesign of a machine, because they require less space, reducebearing specification, eliminate tension devices, yet assure anunusually high degree of every industry has tested and approved Timing beltdrives. They have been adopted as standard equipment by a widevariety of machine builders and equipment of successful drives in operation without belt replacementfor more than five years bear testimony to these drives.

6 Cross &Morse offer three types of Timing belt drive to cover the fullspectrum of industrial are the original tooth belt drives, introduced for thetransmission of low torque instrumentation drives more than fortyyears ago, and since developed and adopted for millions of driveapplications. Eight different pitch configurations were produced,but later belt designs have eliminated the demand for all but threesizes. Cross & Morse offer complete drives to 1/5 (XL), 3/8 (L),and 1/2 (H) pitch sizes with both pilot bored and taper boredpulleys. Drives to other configurations can be supplied to Classical Timing Belt is the ideal low cost drive for powers upto 25 KW with a wide range of both belts and pulleys availablefrom stock.

7 Double sided belts and open ended belts can also Classical Timing Belt Drives pages 29-36 Demands for ever increasing powers and speeds led to theintroduction of a Metric Series of High torque Drive Belts, using aparabolic tooth profile to enable increased tooth contact betweenbelt and pulley. The new tooth profile has improved shear stressresistance, increased power capacity, and reduced noise introduced the RPP belt with an indentation at the top ofthe teeth, to allow local elastic deformation during meshing withpulley, and easier air discharge to further reduce noise and Morse combine RPP belts with std. Metric pulleys toprovide off-shelf drives in 4 pitches; 3mm (3M), 5mm (5M), 8mm(8M), and 14mm (14S).

8 Further development created RPP Silver Belts in 8mm (8S) and14mm (14S) pitch with double power capacity; and Panther Beltsin 8mm (8G) and 14mm (14G) pitch with treble capacity; both stilloperating on standard metric pulleys allowing fullinterchangeability with existing drives. Drives up to 600 KW cannow be Metric Series Belt Drives pages 11-22 These belts use steel tension cord encased in a polyurethane jacketwith integral teeth. The method of manufacture ensures tightcontrol of pitch length for applications where accurate positioningis required. Polyurethane is a non-crumbling, non-markingmaterial with excellent resistance to mineral oils, greases and lightacidic solutions making it an ideal material for food applications,on cigarette manufacturing machines and paper transportingsystems.

9 Polyurethane belt drives are available in 3 pitch sizes, ( ), 5mm (T5) and 10mm (T10), with a selection of pilotbore sided belts and long open end belt lengths are alsoavailable. For reciprocating drives clamping plates are available toretain the Timing Belt Drives pages 37-44 Tel +44 121 360 0155 Fax +44 121 325 1079 Email Timing Belt Catalogue_Cross + Morse 13/12/2010 17:48 Page 2 INDEX BACKNEXT Tel +44 121 360 0155 Fax +44 121 325 1079 Email a. Determine Belt LengthFor drives with pulleys of equal numbers of Number Teeth in Belt Nc = 2. Ao+ Z1pFor drives with pulleys of dissimilar numbers of Number Teeth in BeltNc = + (Z1+ Z2) + (Z2 - Z1)Where Ao = Approximimate Centre Distance mmp = Belt Pitch mmZ1= Number Teeth Small PulleyZ2= Number Teeth Large Pulley Note.

10 Nc must always be greater than (Z1+ Z2)Refer to standard Belt Tables (pages 12-13 Metric Drives,page 30-31 Classical) and select nearest belt length to numbers ofteeth Determine Actual Shaft CentresThe actual centre distance A can then be determined from thefollowing formula where NA is number of teeth in =p/4(NA- Z1+ Z2 + (NA- Z1+ Z2) (Z2-Z1))This will provide a reasonably accurate result but for fixed centredrives please contact Cross & Morse Factors to correct for Teeth in Mesh andBelt Lengtha. Teeth in mesh factor f5 Applicable only on drives with pulleys less than 18 teeth ordrive ratio greater than 3: 1. For a belt to transmit full powera minimum of 6 teeth must be in mesh on each pulley.