1. Pneumatic drive controlled by a solenoid valve. Output pressure is controlled by the input air pressure.
2. Intermittent oil delivery without electrical power or a control box; simple, durable construction.
3. Recommended air pressure: 4–8 kgf/cm². Set solenoid valve ON/OFF times to at least 5 seconds to ensure normal oil delivery.
4. Use with positive-displacement distributors for metered oil delivery.
5. Includes a pressure gauge for checking operating pressure.
6. Includes a float switch for oil level detection and automatic signaling.
7. An optional 8 kgf/cm² pressure switch at the oil outlet detects oil line damage.
8. A magnetic return-oil strainer and tank partition can be added to filter oil entering through the return port. (a) The magnetic strainer is available for tanks of 3 L or more. (b) The partition is available for 3 L and 4 L resin tanks and 8 L sheet-metal tanks.
9. Refer to the float / float switch specifications for contact information.
10. Refer to the diaphragm pressure switch specifications for contact information.
◆ Dimensions
| Tank Capacity | Tank Material | Length L (mm) | Width W (mm) | Height H (mm) | Mounting hole pitch F (mm) | Weight (kg) |
| 2L | Resin | 168 | 118 | 227 | 144 | 2.27 |
| 2L | Aluminum alloy | 217 | 150 | 212 | 95x200 | 3.07 |
| 3L | Resin | 231 | 166 | 222 | 205 | 2.86 |
| 4L | Resin | 277 | 160 | 236 | 250 | 2.68 |
| 4L | Aluminum alloy | 297 | 170 | 232 | 95x280 | 4.14 |
| 8L | Sheet metal | 355 | 201 | 252 | 95x338 | 7.24 |
◆ Specifications
| Input Air Pressure (kgf/cm²) | 4 | 5 | 6 | 7 | 8 |
| Output Pressure (kgf/cm²) | 14 | 18 | 23 | 28 | 33 |
| Discharge Volume | 8 cc/cycle | ||||
| Air Inlet Size | Ø4 / Ø6 (pneumatic quick connectors with external PT1/4 thread) | ||||
| Oil Outlet Size | Ø4 , Ø6 | ||||
| Float Switch | NC contact (NO contact available) | ||||
| Pressure Switch | Optional (NC or NO contact) | ||||
| Applicable Oil Viscosity | 10–220 cSt at 40°C (contact customer service for special oil viscosity requirements) | ||||
◆ Ordering Code
| Model | Tank Capacity (Material) | Oil Outlet Size | Air Inlet Size | Special Requirements | ||||
| PNB | 01 | 3 | 0 | ※ | ||||
| 01 | 2 L (resin) | 0 | Ø4 | 0 | Ø4 | C | Additional magnetic return-oil strainer (tanks of 3 L or more only) | |
| 02 | 2 L (aluminum alloy) | 1 | Ø6 | 1 | Ø6 | D | Additional tank partition (3 L / 4 L resin tanks and 8 L sheet-metal tanks only) | |
| 03 | 3 L (resin) | 2 | Ø4 (with pressure gauge) | PC | Additional pressure switch, NC contact | |||
| 04 | 4 L (resin) | 3 | Ø6 (with pressure gauge) | PO | Additional pressure switch, NO contact | |||
| 05 | 4 L (aluminum alloy) | SO | Float switch changed to NO contact | |||||
| 08 | 8 L (sheet metal) | |||||||
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