WK300 – Pump Group 1 – Calma-Series (Low Noise)
- High-Performance external gear pump in Calma-Series with low pressure pulsation for noise sensitive application
- Dual flank engagement (75% reduced pressure pulsation vs. traditional gear pumps)
- Compact 2-piece design
- Aluminum housing and front flange
- Standard interfaces available
- Multiple sections on demand
- Customized options on demand
- Displacement : 0.8 – 5.7 cm³/rev (0.049 – 0.348 in³/rev)
- Max. rated pressure : 230 bar (3335 PSI)
- Speed range : 800 to 6000 RPM
| Displacement (in³/rev) / (cm³/rev – for reference) | Rated pressure (PSI) | Maximum speed (RPM) |
|---|---|---|
| .049 / (0.8 cm³/rev) | 3335 | 6000 |
| .073 / (1.2 cm³/rev) | 3335 | 6000 |
| .098 / (1.6 cm³/rev) | 3335 | 6000 |
| .122 / (2.0 cm³/rev) | 3335 | 6000 |
| .153 / (2.5 cm/rev) | 3335 | 5000 |
| .195 / (3.2 cm³/rev) | 3335 | 5000 |
| .232 / (3.8 cm³/rev) | 3050 | 4500 |
| .262 / (4.3 cm³/rev) | 2755 | 4500 |
| .293 / (4.8 cm³/rev) | 2465 | 4200 |
| .348 / (5.7 cm³/rev) | 2100 | 3800 |
| Displacement (cm³/rev) | Rated pressure (bar) | Maximum speed (RPM) |
|---|---|---|
| 0,8 | 230 | 6000 |
| 1,2 | 230 | 6000 |
| 1,6 | 230 | 6000 |
| 2,0 | 230 | 6000 |
| 2,5 | 230 | 5000 |
| 3,2 | 230 | 5000 |
| 3,8 | 210 | 4500 |
| 4,3 | 190 | 4500 |
| 4,8 | 170 | 4200 |
| 5,7 | 145 | 3800 |
Product Features
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Low Noise Technology (Calma-Series)
Low Noise Technology – Calma-Series (Dual Flank Engagement)Concentric has developed the Low Noise Calma-Series for gear pumps, based on the patented Dual Flank Engagement. The Calma-Series provides a reduced pressure pulsation by 75% vs. traditional gear pump designs, resulting in a low noise operation..Calma-Series gear pumps are well suited to applications on electrical forklift trucks and other mobile equipments, where low noise and high efficiency are required..The Calma-Series is available for Concentric gear pumps group 1 and 2 and 2.5 (group 3 on demand)..
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Multiple Sections
Multiple Sections – PumpsTo meet specific customer needs, Concentric can design multiple section gear pumps Group 1 on demand (up to 2 sections).These pumps are ideally suited to supply flow to multiple hydraulic functions from one power source..Customer Value:Compact designCosts saving compared to separate pumps with associated fittings and hoses..
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Valve Integration
Valve Integration – W-Series and F12-SeriesConcentric offers a wide range of integrated valve solutions for gear pumps and motors..
Examples:Anti-cavitation check valves(Proportional) pressure relief valvesValve manifolds for multiple functions.
Also speed sensors can be integrated.
