Many designs are only economical if freewheels are used. Integrated freewheels fxr for bolting to the face with sprag liftoff x and torque limiting application as backstop for continuous conveyor installations with multiple drives in which each drive is equipped with abackstop. Internal freewheel fdn 40 cfr in standard type with bearing support as an overrunning clutch on the shaft end of the main drive of a textile machine. Once every two months the inner race should be rotated by hand several times to lubricate internal components. The load sharing of backstops installed in multiple drives on. Thanks to ringspanns patented release me chanics, you are not reliant on leaksusceptible hydrau lic release systems. The backstop arranged on the right prevents the indexing rollers from running backwards while. Ringspann clamping discs disc packs type laf and lff. Internal freewheels fsn for keyway connection on the outer ring with rollers application as backstop. Our website uses cookies to provide userspecific functions. Application as backstop overrunning clutch indexing freewheel features cage freewheels bwx are sprag freewheels to be installed between customersupplied inner and outer rings. Only use ringspann products in a technically impeccable condition. The main purpose of the torque limiter installed on multiple drives is, however, to achieve ideal load sharing. The indexing freewheel arranged on the left is driven via a bell crank with an adjustable lift.
Ringspann mechanical instead of hydraulic the new mechanical disc actuated bush clamping mandrel hdds from ringspann is a screwtype and plugtype construction consisting of several parts and is suitable for manual clamping or powerclamping. It consists of a draw bolt upon which there is a pack of ringspann. Pl lifting capacity per drive at full load kw lifting height m multiplied. Ringspann is a specialist in power transmission components like freewheels, brakes, couplings, torque limiters, locking assemblies, clamping elements, as well as clamping fixtures. Internal freewheel fsn 50 as backstop fitted to the end of the intermediate shaft of a spur gearbox in the drive of an elevator. Manufacturer ringspann has expanded its successful fxr series with new hightech backstops featuring integrated positive torque limiters and a mechanical release function. Backstop overrunning clutch indexing freewheel features internal freewheels fcn r are roller free wheels without bearing support and with series 62 ball bearing dimensions. A screen or fence used to prevent the ball from being thrown or hit far behind or to the sides of home plate.
Application example integrated freewheel fxm 7625 nx as an overrunning clutch between the creep drive and the main drive of a cement mixer. Backstop overrunning clutch indexing freewheel features internal freewheels fd are sprag freewheels without an inner ring. Thanks to ringspanns patented release mechanics, you are not reliant on leaksusceptible hydraulic release systems. Please photocopy or use the pdffile from our website. In many machines and installations, for technical safety. Torque limiting high speed backstop solutions for the west. The clamping fixture evenly grasps the entire circumference of the workpiece. Backstop units should be completely filled with ringspann corporation approved lubricant outlined in the lubrication section starting on page 7. Ringspann is implementing readytoinstall combination solutions consisting of shaft couplings and overload clutches more the largest in the world of its kind. Before commissioning, ascertain and document that the machine the ringspann product is to be built into is compliant with the countryspecific regulations, rules of safety and standards. Disengaging when the outer ring is rotating the centrifugal force causes the sprags to lift off from the inner race. In normal operation freewheeling operation the inner ring overruns and the gear wheel with the pressedin outer ring is at a standstill. Complete freewheels fgrn r a5a6 for keyway connection on the outer ring with rollers application as backstop overrunning clutch indexing freewheel features complete freewheels fgrn r a5a6 are sealed roller freewheels with ball bearings. Seed spreader the indexing freewheel replaces a reduction gear in seed spreader.
Installation and operating instructions for expanding. Installation and operating instructions for complete. Precision clamping technology as a standard solution. Overrunning clutch for application as backstop in installations. Integrated freewheels fxm for bolting to the face with sprag liftoff x application as. Backstop frhd 900 on the head drum shaft of an inclined conveyor belt system.
When axial actuating force is applied, the clamping discs are evenly expanded over their entire circumference and. The ringspann product catalogues are also available in printed format. Freewheels consist of an inner and an outer ring between which clamping elements are arranged. The backstop prevents reverse rotation under the back pressure of the conveyed medium if the motor is turned off.
Backstop selection and drive integration will be discussed for the west angelas high capacity. Although all backstops are shipped from the factory with oil, lubrication levels must be checked prior to operation. By using our website you agree to the use of cookies. Ringspann freewheels are an indispensable design element in the machine building industry as well as in the aerospace industry. In this case the backstop ring replaces the shoulder ring. Installation and operating instructions for taper collet. Manufacturer ringspann has expanded its suc cessful fxr series with new hightech backstops featuring integrated positive torque limiters and a mechanical release function. If there is no torque limiting backstop installed the maximum torque is only 20 500 lbs. When the conveyor belt is without any load, the drum shaft can be turned in both directions during maintenance by removing the bolts. Before assembly ensure that in transition from the seating diameter to the surface for the disc pack must have a sharp edge. Peak torque calculations for backstops in conveyors ringspann. Here the inner ring with the sprag cage is fitted on the bend of the shaft of the.
Backstops overrunning clutches indexing freewheels. Backstop complete freewheels fgr r a3a4 with lever arm with rollers freewheels with bore diameters highlighted blue in the table are available with short delivery times. Above that, there is a slotted expanding sleevescrewed together with a intermediate flange. The outer ring is pressed into the customer housing. Two complete freewheels fav 50 in the roller feed of a sheet metal processing machine. Ringspann backstops, backstopping clutches, backstop clutch. If the force steps were kept low in the calculation algorithm, then each torque is given with its own angle of rotation by joining these points in a diagram the torsion characteristic of the backstop is drawn. Ringspann presents brand new highspeed backstops with. Backstop overrunning clutch indexing freewheel features complete freewheels fgr r a2a7 with mounting flange are sealed roller freewheels with ball bearings. When the creep drive operates, the outer ring is driven by the shaft coupling. When the sliding torque has been reached there is a. Installation and operating instructions for taper collet with. Ringspann presents brand new highspeed backstops with torque. They are supplied oilfilled and ready for installation.
In the case of a motor stop, the elevator must be held securely so that the conveyor goods do not pull backwards. Installation and operating instructions for ringspann. Features integrated freewheels fxr are sprag free wheels without bearing support and with sprag liftoff x. Application as backstop ringspann freewheels are used as backstops in order to prevent rotational movement against the operating direction of rotation.
In the case of the standard type, every second sprag has been be replaced by a cylin. Ringspann gmbh, schaberweg 30 34, d648 bad homburg. It specifies the maximum load at which a backstop limits and takes effect to. The load sharing in a multiple drive system with several. The back driving torque is restrained by the torque arm on the base plate.
The backdriving torque is supported by the lever arm on the base plate. Backstop definition of backstop by the free dictionary. The backstop as well as the gear unit are protected against overload. A pack of ringspann clamping discs sits on thedraw bush. Complete freewheels fb for bolting to the face with sprags, available in four types application as backstop overrunning clutch indexing freewheel features complete freewheels fb are sealed sprag freewheels with ball bearings. The maximum transmissible torque is 2 times the specified nominal torque. When the conveyor belt is without any load, the drum shaft can be turned in both directions during maintenance by removing the torque arm pins. Ringspann is able to recommend suitable shaft materials using din 743 122012 edition taking the surface pressures for the truline flangecouplings rfk tbo into account. This makes compact, spacesaving fitting solutions possible. Other load share methods cannot insure that one backstop will secure full peak torque first. Ringspann another advantage of the new highspeed backstops of ringspann is that the fxru version is available in all sizes, and with a simple mechanical release function.
What makes them so unique is the use of highly durable carbon friction linings that boast maximum surface pressure and, despite its compact size, make extreme slipping torques of up. Intended use the ringspann clamping discs disc packs are developed and designed for the clamping of components via a cylindrical diameter and a true running face. Installation and operating instructions for expanding sleeve. Mr ma fxru or fxrw 140 63 mxare the suitable, economical backstop sizes. It is assumed that this backstop has the same torque rating as the version with the torque limiter. Low speed backstops from ringspann are designed for installations with low speeds and for the use in inclined conveyorbelts elevators or pumps. Ringspann manufacturer of power transmission components and. Order information the coupling halves and the fasteners set can also be ordered separately. When axial actuating force is applied, the clamping discs are evenly expanded over their entire circumference and the expanding sleeveat the same time as a result. Freewheels are used as backstops if reverse rotation is to be prevented. The freewheel as an automatic driving element is preferred to conventional solutions because it offers the following significant advantages.
Ringspann manufacturer of power transmission components. The customers hardened and ground shaft is used as the inner track. We also see, that for such a pair of backstops the load sharing ratio is 78 % to 22 %. Applicable as backstop, overrunning clutch and indexing freewheel available from stock extended operating temperatures. Order information the coupling halves and the fasteners set can also be ordered.
915 1463 1320 757 923 337 1512 1270 754 784 1405 56 1442 224 790 970 902 28 225 1094 827 321 1493 840 1135 1038 298 753 677 784 515