SilentFlo™ 515 & 525 Hydraulic Power Units (HPU)
With features that maximize electrical efficiency and minimize water consumption, and options for remote monitoring of pressure, temperature and fluid level, these HPUs will help reduce facility energy costs. For additional energy savings, the larger units can be equipped with a run-on-demand option that reduces electrical power and cooling water consumption when the system is not running at full capacity.
Key Product Features
Energy Efficient
New Model 525 HPU reduces energy use by 35% or more compared to older HPUs
Cost Efficient
Easy to install pump/motor modules add capacity at a fraction of the cost
Innovative Technology
Remote monitoring and control options available
Quiet Operation
Up to 30 dB(A) quieter than conventional HPUs
Model Comparison
Model 525 - 600 Series
- 4 modules flow rate (60 Hz model): 454 lpm (120 gpm)
- 4 modules flow rate (50 Hz model): 400 lpm (106.4 gpm)
- 5 modules flow rate (60 Hz model): 567 lpm (150 gpm)
- 5 modules flow rate (50 Hz model): 500 lpm (133 gpm)
- 6 modules flow rate (60 Hz model): 681 lpm (180 gpm)
- 6 modules flow rate (50 Hz model): 600 lpm (160 gpm)
- Noise level: 70, 71, and 72 dB(A), respectively
- Maximum reservoir capacity: 1893 L (500 gal)
Model 525 - 300 Series
- 2 modules flow rate (60 Hz model): 227 lpm (60 gpm)
- 2 modules flow rate (50 Hz model): 200 lpm (53.2 gpm)
- 3 modules flow rate (60 Hz model): 340 lpm (90 gpm)
- 3 modules flow rate (50 Hz model): 300 lpm (80 gpm)
- Noise level: 68 dB(A)
- Maximum reservoir capacity: 947 L (250 gal)
Model 515.20 and 515.30
- Model 515.20 flow rate (60 Hz model): 75.7 lpm (20 gpm)
- Model 515.20 flow rate (50 Hz model): 62.5 lpm (16.5 gpm)
- Model 515.30 flow rate (60 Hz model): 113.5 lpm (30 gpm)
- Model 515.30 flow rate (50 Hz model): 100.7 lpm (26.6 gpm)
- Noise level: 63 dB(A)
- Maximum reservoir capacity: 341 L (90 gal)
Model 515.07 & 515.11
- Model 515.07 flow rate (60 Hz model): 26.5 lpm (7 gpm)
- Model 515.07 flow rate (50 Hz model): 22.7 lpm (6 gpm)
- Model 515.07 noise level: 58 dB(A)
- Model 515.11 flow rate (60 Hz model): 41.6 lpm (11 gpm)
- Model 515.11 flow rate (50 Hz model): 37.9 lpm (10 gpm)
- Model 515.11 noise level: 60 dB(A)
- Maximum reservoir capacity: 174 L (46 gal)
Model 515.04
- Flow rate: 15.1 lpm (4 gpm)
- Noise level: 57 dB(A)
- Maximum reservoir capacity: 174 L (46 gal)
Technical Overview
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Smaller SilentFlo HPUs |
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Model 515.04 – 515.30 Specifications |
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Operating pressure: 21 MPa (3,000 psi) |
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Pump type: Variable displacement pumps |
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Filtration: Full flow on the return side |
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Maximum ambient operating temperature: 40°C (104°F) |
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Minimum ambient operating temperature: 5°C (40°F) |
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MODEL 515.04 |
MODEL 515.07 |
MODEL 515.11 |
MODEL 515.20 |
MODEL 515.30 |
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Flow rates (for 60 Hz models) |
15.1 lpm (4 gpm) |
26.5 lpm (7 gpm) |
41.6 lpm (11 gpm) |
75.7 lpm (20 gpm) |
113.5 lpm (30 gpm) |
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Flow rates (for 50 Hz models) |
15.1 lpm (4 gpm) |
22.7 lpm (6 gpm) |
37.9 lpm (10 gpm) |
62.5 lpm (16.5 gpm) |
100.7 lpm (26.6 gpm) |
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Noise level* |
57 dB(A) |
58 dB(A) |
60 dB(A) |
63 dB(A) |
63 dB(A) |
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Reservoir capacity (maximum) |
174 L (46 gal) |
174 L (46 gal) |
174 L (46 gal) |
341 L (90 gal) |
341 L (90 gal) |
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Unit dimensions |
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Width |
77.0 cm (30.3 in) |
77.0 cm (30.3 in) |
77.0 cm (30.3 in) |
89.7 cm (35.3 in) |
89.7 cm (35.3 in) |
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Height |
116.0 cm (45.7 in) |
120.1 cm (47.3 in) |
120.1 cm (47.3 in) |
138.9 cm (54.7 in) |
138.9 cm (54.7 in) |
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Length |
114.0 cm (45.0 in) |
114.6 cm (45.1 in) |
114.6 cm (45.1 in) |
163.1 cm (64.2 in) |
163.1 cm (64.2 in) |
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Weight with maximum oil |
508 kg (1,120 lb) |
522 kg (1,150 lb) |
544 kg (1,200 lb) |
862 kg (1,900 lb) |
907 kg (2,000 lb) |
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Motor size |
11 kW (15 hp) |
11 kW (15 hp) |
18.5 kW (25 hp) |
30 kW (40 hp) |
45 kW (60 hp) |
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* Sound levels [dbA] are expressed as a free field value. Readings may vary with acoustic environment. |
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Specifications subject to change without notice. Please contact MTS for specifications critical to your application. |
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Larger SilentFlo HPUs |
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Model 525 Specifications |
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Operating pressure: 21 MPa (3,000 psi) |
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Pump type: Digital Displacement and/or Swash Plate |
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Filtration: Full flow on the return side |
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Maximum ambient operating temperature: 40°C (104°F) |
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Minimum ambient operating temperature: 5°C (40°F) |
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300 Series 2 Modules |
300 Series 3 Modules |
600 Series 4 Modules |
600 Series 5 Modules |
600 Series 6 Modules |
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Flow rates (for 60 Hz models) |
227 lpm (60 gpm) |
340 lpm (90 gpm) |
454 lpm (120 gpm) |
567 lpm (150 gpm) |
681 lpm (180 gpm) |
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Flow rates (for 50 Hz models) |
200 lpm (53.2 gpm) |
300 lpm (80 gpm) |
400 lpm (106.4 gpm) |
500 lpm (133 gpm) |
600 lpm (160 gpm) |
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Noise level* |
68 dB (A) |
68 dB (A) |
70 dB (A) |
71 dB (A) |
72 dB (A) |
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Reservoir capacity (maximum) |
1,211 L (320 gal) |
1,211 L (320 gal) |
2,188 L (578 gal) |
2,188 L (578 gal) |
2,188 L (578 gal) |
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Unit dimensions |
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Width |
103.4 cm (40.7 in) |
103.4 cm (40.7 in) |
103.4 cm (40.7 in) |
103.4 cm (40.7 in) |
103.4 cm (40.7 in) |
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Height |
199.4 cm (78.5 in) |
199.4 cm (78.5 in) |
199.4 cm (78.5 in) |
199.4 cm (78.5 in) |
199.4 cm (78.5 in) |
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Length |
287.0 cm (113.0 in) |
287.0 cm (113.0 in) |
430.5 cm (169.5 in) |
430.5 cm (169.5 in) |
430.5 cm (169.5 in) |
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Weight with maximum oil |
2,835 kg (6,250 lb) |
3,289 kg (7,250 lb) |
4,876 kg (10,750 lb) |
5,330 kg (11,750 lb) |
5,783 kg (12,750 lb) |
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Motor size |
45 KW (60 Hp) |
45 KW (60 Hp) |
45 KW (60 Hp) |
45 KW (60 Hp) |
45 KW (60 Hp) |
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Number of Motor/pump units |
2, max of 3 |
3 |
4, max of 6 |
5, max of 6 |
6 |
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* Sound levels [dbA] are expressed as a free field value. Readings may vary with acoustic environment. |
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Specifications subject to change without notice. Please contact MTS for specifications critical to your application. |
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Get The Most Out Of Your Investment
Our experts are here to help keep you up and running.
Related Products, Parts or Accessories
Series 295 Hydraulic Service Manifolds
Multi-Pump Control Manager
DuraGlide Hydraulic Actuators
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