1 CENTAFLEX . Series K. are simple, robust, low priced couplings for the connection of Diesel engines with flange mounted hydraulic pumps and splitter gears. Important areas of application The couplings are torsionally very stiff (almost rigid) Hydrostatic construction drives, mainly in the medium enabling drives of hydraulic pumps and similar equip- and low power range, : ment having low mass of inertia to operate below the Excavators, vibratory rollers, loaders, cranes, dum- critical speeds by moving these above the operating pers, forklifts, concrete mixers, concrete pumps, speed range thus providing a drive free of harmful road finishers, rail vehicles, agricultural machines, resonances.
2 Tractors and small compressors. - . K. E X. F L. N TA. CE. Salient Features and advanta- Technical Data ges: * Compact, light, robust, safe in Nominal Maximum Max. operation, long service life. Size Torque Torque Speed Dyn. Torsional Stiffness CTdyn x 10 . * Oil resistant and suitable for tem- -1. TKN (Nm) Tkmax (Nm) Nmax (min ) TKN TKN TKN peratures of -40 to +150 C. (-40 to +300 F). * High torsional stiffness - allowing 100 300 800 500 55,0 62,0 90,0 120. operation below critical speed, without resonances, provided it is correctly selected. 125 800 1600 4500 155 180 315 460. * Service free combination of steel with highly shock resistant, tem- perature stabilized special Poly- 150 1200 3000 4000 260 280 420 900.
3 Amid. * Short mounting length, easy as- i ii 150D 2400 6000 4000 520 560 840 1800. sembly since it can be plugged in axially. * The hubs can be equiped with the Relative Damping = 0,4. proven, patented CENTALOC . clamping. With this the coupling Flywheel flanges It is important that the flange is hub can be fitted to splined mounted in the correc position. We shafts absolutely free of move- Theseflanges are moulded in high have numerous drawings for the ment to eliminate fretting. quality plastic strenghtened with various combinations of engines * The hubs can be modified in form glass fibre to produce a heat stabi- and pumps, gears etc., which and length as needed.
4 Lized product having high impact include all important details, like Various series for standardized strength. position of the flange, length of the * SAE-flywheels and non standard hub, spline of the hub, flange bet- Fundamentally the flywheel flange ween pump and flywheel housing * Low priced and normally availa- is availalbe in two different etc. ble from stock. designs: Therefore please ask for the right Design and Materials a) one piece, with mounting mea- drawing for your specific applica- surements to SAE J620 and tion. Should we not have the dra- Modern design to give rational and some other non standard flyw- wing ready available, we will glad- economic manufacture - good heels.
5 Ly make your specific drawing on material properties - design princi- b) two piece, consisting of one our modern CAD system. ple proven over the years. universal plastic flange, which can be fitted with steel adaptor Misalignment Hubs to any flywheel. Such steel adaptors can be pro- As the coupling is torsionally very High quality precision radial dogs duced either by the customer stiff, it is, of course, also very stiff of alloyed sintered steel are faste- himself of delivered by us. In the in radial direction. ned to the steel hub which is latter case the plastic flange is machined all over (tensile strength mounted onto the steel adaptor. It is suitable for accurately aligned 600 N/mm - psi).
6 The drives, ie. flange mounted. The mounting of these dogs is done in The one piece flanges can be coupling is able to compensate the our works with precise fixtures and mounted to the flywheel in two dif- small radial and angular misalign- with controlled tightening torques ferent positions, resulting in four ments, that must normally be (TA = 90 Nm). Hubs with dogs are different axial mounting lengths. expected on flange mounted dri- called hub-stars . This should be ves. seen as one unit and not be dis- Using the different position of the mantled. The lateral flanks of the flanges and different lengths of the In axial direction the hub can dogs are slightly crowned, to avoid hubs the ideal overall length for move freely and be located a few edge pressure at angular misalign- the coupling can be attained.
7 Mm from the ideal axial position, ments. ie. protude out of the flange, without any disadvantage. Only at high loads the dogs should be completely engaged. CF-K-2 CENTA Power Transmission leading by innovation - K. LEX. A F. Dimensions ENT. C. Size Nomi- Bolt connection Flange position A Flange position B Order Code nal torque d1 C D E F G H L1 L2 N1 N2 TK Z M A1 A2 A3 A4 B1 B2 B3 B4 Wt [Nm] min max [kg]. 44 14 36 6 - - - - 1,5 CF-K-100-165-A-*-**. 100 300 15 40 174 125 34 4 10 20 42 42 60 <100 142 3X120 M12 - - - - 24 34 16 26 1,5 CF-K-100-165-B-*-**. 46 28 39 21 - - - - 2,4 CF-K-125-195-A-*-**. 125 800 20 55 195 136 30 6 10 14 50 60 85 <125 165 6X60 M12 - - - - 38 36 31 29 2,8 CF-K-125-195-B-*-**.
8 55,5 38,5 35 19 - - - - 5,4 CF-K-150-230-A-*-**. 150 1200 25 70 230 165 27 5 10 12 60 53 110 <150 200 8X45 M12 - - - - 48,5 45,5 28 25 5,8 CF-K-150-230-B-*-**. 150D 2400 30 70 230 165 27 5 10 12 52 70 110 <150 200 8X45 M12 32 40 - - - - - - 6,8 CF-K-150-D-*-**. * Please state overall length ( 44 - see flange position A, dimension A1 = 44) ** Please state finished bore Above dimension table shows the general dimensions for the design of special versions. The standard types to SAE/DIN and popu- lar special designs are shown on page 4. Other lengths of hubs - shorter or longer - or other axial positions of the dogs and hubs are possible. Mounting: 3. Fit coupling onto the pumpshaft and Axial securing of hub In most cases the diameter of the hub- secure.
9 Star is smaller than the center locating 4. Offer up pump to engage coupling The hub can adjust its axial position diameter of the pump flange, ie. the and pump in the pump mounting freely, there is no axial stop. Therefore, hubstar passes through bore in the flan- plate. the hub has to be secured onto the pump ge which connects the pump with the For the occasional case where the hub- shaft axially. Preferably this is done with flywheel housing. The diameter of the star diameter is larger than the bore in our proven CENTALOC-clamping system. hubstar is always a little smaller than the the pump mounting plate, the installa- nominal sizes of the coupling, eg the tion should be carried out acc.
10 Pict. 2: For light drives where the pumpshaft has rotation diameter of the hubstar for a shoulder, it can be sufficient to clamp CF-K-100 is <100mm, ie it will pass 1. Bolt the coupling flange onto the flyw- the hub against the shoulder using a bolt through the bore in the pump mounting heel. and washer fastened into the end of the plate provided it is 100mm or 4 inches 2. Bolt pump mounting plate to pump. pump shaft, provided it has a tapped diameter or bigger. In this case the 3. Fit coupling hub onto the pumpshaft hole. installation can be carried out acc. pict. and secure. 1: 4. Offer up pump and mounting plate so ----------------- 1. Bolt the coupling flange onto the flyw- coupling engages and locate pump heel.