shaft clamping selection cross+morse drive torque to be transmitted and axial thrust loads:the maximum effective torque te derived from maximum drive torque tm and maximum axial thrust transmission solutions power ft must always be less than the torque capacity m shown in tables for selected shaft clamping element the maximum drive torque tm must take into consideration any shock loads and also the maximum starting torque of drive if the max torque is not known it can be estimated by applying the service factor from the table below to the nominal drive torque td which can be derived from motor power p and shaft speed n r.p.m drive torque td max drive torque tm 9550 p n sf x td nm nm where p power kw n shaft speed rpm te l +44 121 360 0155 selection factors sf type of load type of motive power smooth a.c motor direct start d.c motor/a.c motor invertor control or soft start hydraulic or pneumatic motors internal combustion engines 3 1.5 1.2 3 light shock 3 2 1.5 3.5 medium shock 3 2.
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clamping elements type rck 13 cross+morse power these shaft clamping elements are very compact units capable oftransmission solutions transmitting medium torques their design ensures good concentricity between hubs and shafts without any other means of location a slight axial movement between hub and shaft occurs during clamping these units can be installed totally within the hub providing optimum safety and minimal axial length te l +44 121 360 0155 recommended tolerances for full torque transmission are:shaft hub h8 h8 clamping surfaces to be finished to 15 µm fax +44 121 325 1079 dimensions part no d rck13-18x47 rck13-19x47 rck13-20x47 rck13-22x47 rck13-24x50 rck13-25x50 rck13-28x55 rck13-30x55 rck13-32x60 rck13-35x60 rck13-38x65 rck13-40x65 rck13-45x75 rck13-50x80 rck13-55x85 rck13-60x90 rck13-65x95 rck13-70x110 rck13-75x115 rck13-80x120 rck13-85x125 rck13-90x130 rck13-95x135 rck13-100x145 rck13-110x155 rck13-120x165 rck13-130x180 rck13-140x190 rck13-150x200 rck13-160x210 rck13-170
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clamping elements type rck 70 cross+morse these shaft clamping elements are designed to give optimum concentricity power transmission solutions both radically and axially similar in design to the rck 13 but with increased length to provide improved support and reduced pressures on both shaft and hub these units must always be installed inside the hub to ensure optimum concentricity axial movement of hub will occur during clamping operation te l +44 121 360 0155 recommended tolerances for full torque transmission are:shaft hub h8 h8 clamping surfaces to be finished to 15 µm fax +44 121 325 1079 dimensions part no d rck70-19x47 rck70-20x47 rck70-22x47 rck70-24x50 rck70-25x50 rck70-28x55 rck70-30x55 rck70-32x60 rck70-35x60 rck70-38x65 rck70-40x65 rck70-42x75 rck70-45x75 rck70-48x80 rck70-50x80 rck70-55x85 rck70-60x90 rck70-65x95 rck70-70x110 rck70-75x115 rck70-80x120 rck70-85x125 rck70-90x130 rck70-95x135 rck70-100x145 rck70-110x155 rck70-120x165 rck70-130x180 rck70-140x190 rck70-150x200
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clamping elements type rck 71 cross+morse power transmission the rck 71 is a type rck 70 with addition of a distance ring to prevent solutions axial movement of the hub during clamping due to the additional friction between the element and hub during clamping maximum torques are reduced but with reduction in surface pressures also this design can be mounted within the confines of a hub providing a stepped bore is provided to accommodate the flange te l +44 121 360 0155 recommended tolerances for full torque transmission are:shaft hub h8 h8 clamping surfaces to be finished to 15 µm fax +44 121 325 1079 dimensions part no d rck71-19x47 rck71-20x47 rck71-22x47 rck71-24x50 rck71-25x50 rck71-28x55 rck71-30x55 rck71-32x60 rck71-35x60 rck71-38x65 rck71-40x65 rck71-42x75 rck71-45x75 rck71-48x80 rck71-50x80 rck71-55x85 rck71-60x90 rck71-65x95 rck71-70x110 rck71-75x115 rck71-80x120 rck71-85x125 rck71-90x130 rck71-95x135 rck71-100x145 rck71-110x155 rck71-120x165 rck71-130x180 rck71-140x190 rck71-
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clamping elements type ace 81 cross+morse available for shaft diameters down to 11mm these shaft clamping elements power transmission solutions are designed to fit into very small diameter hubs being particularly suited to timing pulley and overload clutch applications a spacer ring prevents axial movement during clamping and design ensures good levels of concentricity for correct operation of these units the hub diameter should not be less than the flange diameter d2 even though with many materials stress limits would allow selection of smaller hub diameters te l +44 121 360 0155 recommended tolerances for full torque transmission are:shaft hub h8 h8 clamping surfaces to be finished to 15 µm fax x distance required to remove screws additional clearance for alan key may be required +44 121 325 1079 dimensions dimensions mm part no d ace81-11x26 ace81-12x26 ace81-14x26 ace81-15x26 ace81-16x26 ace81-18x26 ace81-19x26 ace81-20x26 ace81-19x38 ace81-20x38 ace81-22x38 ace81-24x38 ace81-25x3
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clamping elements type rck 61 cross+morse available for shaft diameters from 10mm these clamping power transmission solutions elements are designed for small low torque applications providing concentric connection of components to shafting the thin wall design combined with low hub pressures enable use within small hub diameters the design is intended that the units fit totally within the hub bore to provide safe surface some axial movement will occur when the units are clamped te l +44 121 360 0155 l x l1 recommended tolerances for full torque transmission are:shaft hub h8 h8 fax clamping surfaces to be finished to 15 µm Ød Ød +44 121 325 1079 x distance required to remove screws additional clearance for alan key may be required dimensions dimensions mm part no d rck61-10x20 rck61-12x22 rck61-14x26 rck61-15x28 rck61-16x32 rck61-18x35 rck61-19x35 rck61-20x38 rck61-22x40 rck61-24x47 rck61-25x47 10 12 14 15 16 18 19 20 22 24 25 d 20 22 26 28 32 35 35 38 40 47 47 l 15.5 15.5 20 20 21 25
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clamping elements type rck 40 cross+morse power in a wide these are the original type of shaft clamping elements proven transmission solutions range of applications for more than 20 years suited to more general applications this series provides medium torque transmission which can be increased by mounting the unit in series this type does not provide self centring and therefore other methods of centring the hub to the shaft are required the units do not move axially during clamping and generally self-release when clamping screws are relaxed te l +44 121 360 0155 recommended tolerances for full torque transmission are:shaft hub h9 h9 as both cones are split larger tolerances up to h11/h11 can be accommodated but with a reduction in torque capacity clamping surfaces to be finished to 15 µm if two or more elements are used in series the resultant torque will be proportionally increased however the minimum hub dia must be increased to accommodate the extra stress x distance required to re
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clamping elements type rck 11 cross+morse these shaft clamping elements provide maximum torque power transmission solutions transmission from a single unit but due to their large clamping surfaces clamping pressures are kept to reasonable levels the design enables automatic centring between shaft and hub and axial positioning of the hub does not change during clamping suitable for applications with high bending loads te l +44 121 360 0155 recommended tolerances for full torque transmission both shaft and hub should be within the following tolerances:shaft hub h8 h8 clamping surfaces to be finished to 15 µm these units ideal for mounting of wheels and belt conveyor pulleys fax x distance required to remove screws additional clearance for alan key may be required +44 121 325 1079 dimensions dimensions mm part no d rck11-25x55 rck11-28x55 rck11-30x55 rck11-35x60 rck11-38x75 rck11-40x75 rck11-42x75 rck11-45x75 rck11-48x80 rck11-50x80 rck11-55x85 rck11-60x90 rck11-65x95 rck11-70x110 rck11-
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clamping elements type rck 50 cross+morse these shaft clamping elements consist of just two conical power transmission solutions rings which require the minimum of radial space so providing compact assemblies and enabling use within small hub diameters the design offers the maximum versatility of design but does require the customer to provide their own thrust ring assembly whilst only providing low torque transmission per unit they can be combined up to 4 units to increase torque capacity when fully clamped these units provide excellent gastight sealing many designs of thrust rings are possible and sketches to the left are two typical designs these units do not self centre so require external means of centring the hub recommended tolerances for full torque transmission are:up to 38m shaft Ø:40mm and above shaft Ø:shaft hub shaft hub h6 h7 h8 h8 te l +44 121 360 0155 clamping surfaces to be finished to 15 µm factor for combining elements in one assembly number of elements 2 3 4 torque
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clamping elements type rck 95 cross+morse similar in design to the clamping discs type rck 19 butpower transmission solutions with the discs spaced further apart to enable connection to more than one shaft enabling use as a rigid shaft coupling these units can be used to connect two identical diameter shafts which are perfectly aligned or to produce a longer shaft which is only mounted in two bearings torque capacities are suitable for standard shafting these units provide zero backlash shaft connection with advantage of fast assembly and disassembly the design makes the unit equally suitable for horizontal and vertical shafts capable of withstanding high axial loads te l +44 121 360 0155 recommended tolerances for full torque transmission shafts should be to h8 tolerance with surface finish 15 µm warning the units are not flexible couplings and must never be used as such any radial loads on shafts must be adequately supported by bearing assemblies fax +44 121 325 1079 dimensions dimen
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installation instructions cross+morse installation and removal of cross shaft clamping elements types rck 11 13 15 16 61,70,71,80 and ace81 installation:1 2 3 4 5 6 7 slacken all screws in element by approx two turns remove two or three screws completely and fit into equally spaced s empty release thread holes tighten these screws lightly so as to ensure inner and outer cones are kept apart clean all contact surfaces including screw threads and lightly oil with clean thin unmodified oil insert clamping element into hub and push onto shaft and locate remove screws from release holes and replace in original holes tighten all screws finger tight and align hub tighten all screws evenly in a diametrically opposite sequence see typical progression in sketch using a torque wrench initially at half screw catalogue torque then 3/4 value and finally full torque check all screws at full torque until no further rotation of screws occurs 9 3 1 power transmission solutions 6 8 4 te l +44 121 360 01
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