axial piston hydraulic motor SAE
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3202 GB Motor SCM 012–130 Sunfab SCM is a range of robust axial piston motors especially suitable for mobile hydraulics. The SCM covers the entire Sunfab SCM is of the bent- SUNFAB SCM SAE 012034 features double tapered roller bearings, which permits high shaft loads and gives superb speed performance. displacement range 12-130 cm3/rev at a maximum working pressure of 40 MPa. axis type with spherical pistons. The design results in a compact motor with few moving parts, high starting torque and high reliability. Type SAE SUNFAB SCM SAE 040130 combines a tapered roller bearing and a radial bearing for high radial load tolerance and long life time. SUNFAB SCM’s high level of reliability is based on the choice of materials, hardening methods, surface structures and the quality assured manufacturing process. 012 017 025 034 040 047 056 064 084 084 090 090 108 108 130 SAE B SAE B SAE B SAE B SAE C SAE C SAE C SAE C SAE C SAE D SAE C SAE D SAE C SAE D SAE D Displacement cm3⁄rev. 12.6 17.0 25.4 34.2 41.2 47.1 56.7 63.5 83.6 83.6 90.7 90.7 108.0 108.0 130.0 Working pressure max. intermittent MPa 40 40 40 40 40 40 40 40 40 40 40 40 40 40 35 max. continuous MPa 35 35 35 35 35 35 35 35 35 35 35 35 35 35 30 Revolutions max. intermittent rpm 8250 8250 6500 6500 5900 5900 5900 5900 4800 4600 4800 4600 4800 4600 4600 max. continuous rpm 7500 7500 5900 5900 5300 5300 5300 5300 4400 4200 4400 4200 4400 4200 4200 min. continuous rpm 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 Power max. intermittent kW 50 70 80 110 120 135 165 180 200 190 215 205 255 245 255 max. continuous kW 20 25 40 55 60 65 80 90 100 100 110 110 130 130 135 Start torque theoretical value Nm ⁄ MPa 2.0 2.7 4.0 5.4 6.6 7.5 8.9 10.0 13.3 13.3 14.4 14.4 17.1 17.1 20.5 Mass moment of inertia ( x 10 -3) kg m2 0.9 0.9 1.1 1.1 2.6 2.6 2.6 2.6 6.3 7.4 6.3 7.4 6.3 7.4 7.4 Weight kg 9.0 9.0 9.0 9.0 15.0 15.0 15.0 15.0 18.0 35.0 18.0 35.0 18.0 35.0 35.0 Data concerning RPM are based on maximum premitted peripheral velocity of the tapered roller bearing. Intermittent power data are based on maximum continuous speed and maximum working pressure. Continuous power data are based on maximum output power without external cooling of the motor housing. 1 (11) Intermittent duty is defined as follows: max 6 seconds per minute, e g peak RPM when unloading or accelerating.

Versions, main data Example SC M Line - 012 1 W - N - SB4 - B13 - S3 U - 1 00 2 3 - 4 - 5 - 6 - 7 8 - 9 10 Line SC 7. Connection cover 012 017 025 034 040 047 056 064 084 090 108 130 Sunfab Compact, bent-axis design S1 40° Mount flange vertical* - - - - - - - - X X X X Motor S2 40° Mount flange horizontal* - - - - X X X X - - - - 2. Displacement S3 40° threaded connection X X X X - - - - - - - - V1 90° Mount flange vertical* - - - - - - - - X X X X V2 90° Mount flange horizontal* - - X X X X X X X X X X R1 Side connections, flanged* - - X X X X X X X X X X K3 Combicover 90° & side conn....

General instructions Choice of shaft seal Temp. Max. housing pressure MPa at rpm Motor SCM Code °C 1000 2000 3000 4000 5000 012-034 B N 75 0.55 0.27 0.18 0.14 0.11 H 75 2.46 1.23 0.82 0.61 0.51 V 90 0.55 0.27 0.18 0.14 0.11 040-108 C N 75 0.55 0.27 0.18 0.14 0.11 H 75 2.46 1.23 0.82 0.61 0.51 V 90 0.55 0.27 0.18 0.14 0.11 084-130 D N 75 0.35 0.17 0.12 H 75 1.56 0.78 0.52 V 90 0.35 0.17 0.12 Subject to design modifications without notice Bearing life (h) Optimal force direction of radial load F Radial load (N) Shaft loads The life of the motor is highly dependent on the bearing life. The...

Temperatures/Housing cooling Q Excessive system temperature reduces the life of the shaft seal and can lower the oil viscosity below the recommended level. A system temperature of 60 °C and a drain flow temperature of 90 °C must not be exceeded. Qflush Counter pressure valve Cooling/flushing of the motor housing can be needed to keep the drain flow temperature at an acceptable level. Flushing l/min 2-8 4-10 6-12 Cont. RPM ≥ 2800 ≥ 2500 ≥ 2200 Counter pressure valve Suggested flow: Motor SCM 012-034 040-064 084-130 Qflush Flushing valve Qflush Housing flushing can be built up with the help...

Useful formulaes Required flow rate Q = Dxn 1000 x ηv Speed n = Q x 1000 x ηv D RPM Torque M = D x ∆p x ηhm 6,3 Nm Power P = Q x ∆p x ηt 60 litres⁄min. kW D = displacement, cm3⁄revolution n = speed, revolution⁄min P = power, kW Q = flow rate, litres⁄min ηv = volumetric efficiency ηhm = hydraulic-mechanical efficiency ηt = overall efficiency = ηv x ηhm M = torque, Nm ∆p = pressure difference between the hydraulic motor inlet and outlet, MPa 10 (11)

Produced in Sweden by Nova Design 3202GB1205 WARNING When the motor is in use: 1. Do not touch the pressure pipe 2. Beware of rotating parts 3. The motor and pipes can reach high temperatures Sunfab Hydraulics AB, Box 1094, SE-824 12 Hudiksvall, Sweden. Phone: +46 650-367 00, Fax: +46 650-367 27, E-mail: sunfab@sunfab.se Web: www.sunfab.com 11 (11)