Functional description Hägglunds hydraulic industrial motor COMPACT CB is of the radial-piston type with a rotating cylinder block/hollow shaft and a stationary housing. The cylinder block is mounted in fixed roller bearings in the housing. An even number of pistons are radially located in bores inside the cylinder block, and the valve plate directs the incoming and outgoing oil to and from the working pistons. Each piston is working against a cam roller. When the hydraulic pressure is acting on the pistons, the cam rollers are pushed against the slope on the cam ring that is rigidly connected to the housing, thereby producing a torque. The cam rollers transfer the reaction force to the piston which are guided in the cylinder block. Rotation therefore occurs, and the torque available is proportional to the pressure in the system. Oil main lines are connected to ports A and C in the connection block and drain lines to ports D1, D2, D3 or D4 in the motor housing. ACB-1.1 02-01-31, Replaces 01-04-12 The motor is connected to the shaft of the driven machine through the hollow shaft of the cylinder block.the torque is transmitted by using a mechanical shrink disc, or alternatively by splines. Valid patents US 4522110, US 005979295A, SE 456517, EP 0102915, JP 83162704, GB 1385693, European Patent No 0524437. Quality To assure our quality we maintain a Quality Assurance system, certified to standard ISO 9001, EN 29001 and BS 5750; Part 1. 1 2 3 D A, C 1. Cam ring 2. Cam roller 3. Piston 4. Shaft coupling 4 8 5. Cylinder block / hollow shaft 5 6. Cylinder block / spline 7. Shaft end housing 8. Cylindrical roller bearing 11 9. Connection block 10. Valve plate 11. Axial bearing 6 7 9 A = Inlet or outlet port»a«c = Inlet or outlet port»c«10 D = Drain port The contents of this information are subject to change without notice or obligation. Information herein should be confirmed before placing orders. 1(1)
Calculation fundamentals Output power Output torque ( η = 98%) m Pressure required ( η m = 98%) Flow rate required Output speed Tn P= (kw) on driven shaft 9549 T= T ( p- p - p ) η s l c m p= T + pl + p T η c S m (Nm) (bar) n Vi n Vi q = + ql (l/min) q = + ql 1000 231 q-ql n= 1000 (rpm) n= V i Tn P= (hp) on driven shaft 5252 Ts ( p- pl - pc) η T= m (lbf ft) 1000 p= T 1000 + p + p (psi) T η l c s q-ql 231 V i m ACB-1.2 02-01-31, Replaces 01-04-12 (gpm) (rpm) Inlet power q ( p-pc) P= (kw) in P= 600 in q ( p-pc) 1714 (hp) Quantity Symbol Metric US Power P = kw hp Output torque T = Nm lbf ft Specific torque T s = Nm/bar lbf ft/1000 psi Rotational speed n = rpm rpm Required pressure p = bar psi Pressure loss Dp l = bar psi Charge pressure p c = bar psi Flow rate required q = l/min US gallon/min Total volumetric loss q l = l/min US gallon/min Displacement V i = cm 3 /rev in 3 /rev Mechanical efficiency h m = (0,98)* For more information See Hägglunds Powerful Engineering (EN347-4). Definitions Rated speed** Rated speed is the highest allowed speed for a charge pressure of 12 bar (175 psi) above case pressure. When a closed loop system is used, a minimum of 15% of oil is to be exchanged in the main loop. Max speed Maximum speed is the maximum allowed speed. Special considerations are necessary regarding charge pressure, cooling and choice of hydraulic system for speeds rated above. Accepted conditions for standard type of motor: 1. Oil viscosity 20-40 - 10000 cst (98-187 - 4650 SSU). 2. Temperature -35 C to +70 C (-31 F to +158 F). 3. Case pressure 0-3 bar (0-45 psi) 4. Charge pressure (see diagram). 5. Volumetric losses (see diagram). * Not valid for starting efficiency ** Operating above rated conditions requires engineering approval. The contents of this information are subject to change without notice or obligation. Information herein should be confirmed before placing orders. 1(1)
ACB-1.3 02-09-09, Replaces 02-01-31 Motor data Metric Specific torque Rated * speed 1 ) Max. speed Max. ** pressure Max. torque 2 ) Max. power 3 ) Intermittently Displacement Motor type V i T s n n p knm kw cm 3 /rev Nm/bar rev/min rev/min bar CB 280-240 15 100 240 53 68 350 79 530 CB 280 17 600 280 44 58 350 92 530 CB 400-240 15 100 240 94 125 350 79 970 CB 400-280 17 600 280 73 105 350 92 950 CB 400-320 20 100 320 71 94 350 110 970 CB 400-360 22 600 360 59 82 350 120 960 CB 400 25 100 400 58 75 350 130 970 CB 560-440 27 600 440 49 65 350 140 930 CB 560-480 30 200 480 48 62 350 160 970 CB 560-520 32 700 520 41 57 350 170 960 CB 560 35 200 560 40 53 350 180 970 CB 840-600 37 700 600 30 45 350 200 880 CB 840-640 40 200 640 28 41 350 210 850 CB 840-680 42 700 680 27 40 350 220 890 CB 840-720 45 200 720 25 37 350 240 870 CB 840-760 47 800 760 23 34 350 250 840 CB 840-800 50 300 800 23 34 350 260 890 CB 840 52 800 840 21 32 350 280 870 Specific Rated * Max. Max. ** Max. Max. power Displacement ) US torque speed 1 ) speed pressure torque 2 ) Intermittently Motor type V i T s n n p lbf ft/1000 lbf ft hp in 3 /rev psi rev/min rev/min psi CB 280-240 920 12 200 53 68 5000 57 000 710 CB 280 1070 14 200 44 58 5000 67 000 710 CB 400-240 920 12 200 94 125 5000 57 000 1300 CB 400-280 1070 14 200 73 105 5000 67 000 1300 CB 400-320 1230 16 300 71 94 5000 76 000 1300 CB 400-360 1380 18 300 59 82 5000 86 000 1300 CB 400 1530 20 300 58 75 5000 95 000 1300 CB 560-440 1690 22 400 49 65 5000 100 000 1300 CB 560-480 1840 24 400 48 62 5000 110 000 1300 CB 560-520 1990 26 400 41 57 5000 120 000 1300 CB 560 2150 28 500 40 53 5000 130 000 1300 CB 840-600 2300 30 500 30 45 5000 140 000 1200 CB 840-640 2450 32 500 28 41 5000 150 000 1100 CB 840-680 2610 34 600 27 40 5000 160 000 1200 CB 840-720 2760 36 600 25 37 5000 170 000 1200 CB 840-760 2910 38 700 23 34 5000 180 000 1100 CB 840-800 3070 40 700 23 34 5000 190 000 1200 CB 840 3220 42 700 21 32 5000 200 000 1200 *) Related to a required pressure of 12 bar/175 psi for motors in braking mode. (Special considerations regarding charge pressure, cooling and choice of hydraulic system for speeds above rated, 4 ports must be used for higher speed). **) The motors are designed according to DNV-rules. Test pressure 420 bar/6000 psi. Peak/transient pressure 420 bar/6000 psi maximum, allowed to occur 10 000 times. 1 ) Special considerations regarding charge pressure, cooling and choice of hydraulic system for speed above rated. 2 ) Calculated as: Metric= Ts (350-15) 0,98 US= Ts (5000-218) 0,98. 3 ) Valid for minimum permissible oil viscosity 20 cst in the motor case. The contents of this information are subject to change without notice or obligation. Information herein should be confirmed before placing orders. 1(1)
ACB-1.4 04-08-10, Replaces 02-01-31 Ordering code, COMPACT MOTORS In order to identify Hägglunds equipment exactly, the following ordering code is used. These orde ring codes should be stated in full in all correspondence e.g. when orde ring spare parts. The contents of this information are subject to change without notice or obligation. Information herein should be confi rmed before placing orders. 1(3)
02-01-31, Replaces 01-04-12, ACB-1.4 Ordering code, TORQUE ARM for CB 280-840 In order to identify Hägglunds equipment exactly, the following ordering code is used. These orde ring codes should be stated in full in all correspondence e.g. when ordering spare parts. Example: T C A 40-0 - 0-0 0 T C - - - Torque arm Generation Torque arm size TCA 40 for CB 280, CB 400 TCA 84 for CB 560, CB 840 Attachment Pivoted Other Modification Design Standard Special index 2 9 0-9 00 01-99 To be filled in by Hägglunds The contents of this information are subject to change without notice or obligation. Information herein should be confi rmed before placing orders. 2(3)
04-01-19, Replaces 02-09-09, ACB-1.4 Ordering code, SPEED ENCODERS In order to identify Hägglunds equipment exactly, the following ordering code is used. These orde ring codes should be stated in full in all correspondence e.g. when ordering spare parts. Speed encoder for mounting set SMCB. Example: S P D B 1-1000 S P D B - Speed encoder Digital Generation Type of encoder Standard 1 Explosion proof 2 Pulse rate (pulse/rev) 1000 3600 Ordering code, MOUNTING SET for Speed encoder Example: S M C B 1-0 0 0 S M C - Mounting set for speed encoder For motors Compact Generation C B Type of encoder Standard 1 Explosion proof 3 Modification 0-9 Design Standard Special index 00 01-99 To be filled in by Hägglunds The contents of this information are subject to change without notice or obligation. Information herein should be confi rmed before placing orders. 3(3)