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cross tensioners cross tensioners provide constant belt or chain tension their automatic tensioning action translates into improved performance and extended life for most types of fixed-centre drives additionally the built-in spring mechanism acts as a buffer absorbing momentary overloads and reducing vibration tensioners are available in a number of sizes and mounting styles ideally suited for drives on agricultural machinery off-road vehicles conveyors packaging machinery printing presses and many other industrial applications precision construction and high-quality materials are combined for a superior product with proven durability in the toughest environments tensioners can be supplied as base units for adaption by customer or as complete assemblies with chain sprockets guides for roller chain applications there are two basic designs of tensioners available the rotary tensioner and the linear tensioner te l +440 121 360 0155 rotary tensioner type rt rotary tensioners provide a ful
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cross tensioners rotary tensioner series rt provides up to 90° useable tensioning action a blind hole is provided in the mounting face to enable location with a pin in the framework if rapid positioning of the tensioner is required te l +440 121 360 0155 blind hole 9mm deep 6mm Ø rt 1000 series 8mm Ø rt 2000 series fax cat no rt1001 rt1002 rt2001 rt2002 torque range 8-18 nm 8-18 nm 20-34 nm 20-34 nm a 88.9 88.9 101.6 101.6 b 5.6 5.6 6.9 6.9 c 15.0 15.0 17.5 17.5 d 70 70 92 92 e 136 136 160 160 f 30 30 37 37 g 3/8 unc 3/8 unc 1/2 unc 1/2 unc h m10 10 1/2 unc 13 j 29.5 +44 0 121 325 1079 29.5 36.0 36.0 rt series incorporate adjustment marks every 15 degrees to enable simple setting linear tensioner series lt provides up to 43mm linear adjustment with accurate control email sales@crossmorse.com cat no lt1002 lt2002 lt3002 spring force n 66-178 89-267 155-400 travel t 29 31 43 a 60 75 90 b 25 30 35 c 48 60 75 d 75 90 108 e min 111 144 167 e max 140 175 210 f 10 12 14 g 10.5 12.5 14.
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rotary chain tensioners suitable for simplex duplex and triplex chain drives for british standard roller chains sprung loaded chain tensioners can extend the life of roller chain on fixed centre drives by more than 30 particularly where centre distance exceeds 40 times chain pitch they can be used for drives operating in either direction providing a smoother drive self tensioned and so are virtually maintenance-free of robust construction the chain tensioners provide an angular movement of 45° a blind location hole is machined on the mounting face at radius j diametrically opposite the adjustment indicator although not required for normal operation of the tensioner the location hole can be used with a corresponding pin in the framework for quick positioning or additional torque resistance te l +440 121 360 0155 fax +44 0 121 325 1079 blind hole for location crt 1000 series 6mm Ø x 9mm deep crt 2000 series 8mm Ø x 9mm deep tensioner cat no simplex chain crt1106 crt1108 crt1110 crt2112
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linear chain tensioners the linear chain tensioners are based on the `lt series tensioner with the aluminium mounting block replaced by a plastic chain guide mounted on the unloaded strand of the chain in compressed condition the tensioner takes out slack in the chain drive as the chain wears the tensioner extends under its spring to take-up the slackness in the drive the chain guides are manufactured from uhmw polyethylene selected for its inherent self lubricating properties and are available in two series the standard series utilises a large radius guide in arc form to provide a smooth chain transmission for quiet operation with minimised wear the compact series have smaller radii circular guides with full 180° wrap possible these are used where space is restricted and for tail sprockets on light loaded conveyors tensioners are available for simplex duplex and triplex drives and are also suitable for extended pitch and rollerless bush chains te l +440 121 360 0155 fax +44 0 121 325
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efson fixed chain tensioners the efson fixed chain tensioner uses the uhmw polyethylene circular guides from the compact linear tensioner mounted in a rugged die cast aluminium frame which is slotted to enable quick adjustment in any direction using a single bolt this economical tensioner is ideal for applications where automatic tensioning is not required and for drives subject to frequent speed changes or torque reversals it is possible to reverse drives with this tensioner providing speeds and chain loads are low the tensioner should always be mounted on the outside of the non driving chain strand close to the larger sprocket te l +440 121 360 0155 fax +44 0 121 325 1079 simplex chain catalogue no ct1401 ct1402 ct1403 ct2401 ct2402 ct2403 ct3401 ct3402 ct3403 ct3404 ct3405 chain size 06b-1 06b-2 08b-1 08b-2 10b-1 12b-1 10b-2 12b-2 16b-1 16b-2 20b-1 dimensions in mm duplex chain email a 40 40 40 50 50 50 60 60 60 60 60 b 15 15 15 18 18 18 20 20 20 20 20 c 73 73 73 85 85 85 82 82 82 8
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