VDR-1B-1A2-22
Variable volume vane pump
- Pump capacity
- 16.7 cm³/rev
- Pressure adjustment
- 1.5–3.5 MPa
- Shaft key width
- 4.76 mm
- Mounting
- Flange type
- Design / option
- 22 / no U option
Product photographs supplied by DENGFENG and matched by model filenames. Confirm the exact unit and nameplate with the quotation.
NACHI / Hydraulic Pumps
NACHI
VDR-1B-1A4-22
NACHI VDR-1B-1A4-22 is a flange-mounted variable volume vane pump. The design-22 base configuration has 16.7 cm³/rev capacity and a 6.5–10.5 MPa pressure adjustment range.
Model: VDR-1B-1A4-22
Include quantity, destination, required condition and delivery date. Pricing and availability are confirmed individually.
Choose by configuration
What defines this model
- Pump capacity
- 16.7 cm³/rev
- Pressure adjustment
- 6.5–10.5 MPa
- Shaft key width
- 4.76 mm
- Mounting
- Flange type
- Design / option
- 22 / no U option
Compare nearby models
Closest listed configurations in NACHI VDR. These are comparison references; interchangeability has not been established.
Highlighted rows differ. On small screens, scroll the table sideways.
| Selection factor | This modelVDR-1B-1A4-22 | VDR-1B-1A2-22 | VDR-1B-1A3-22 | VDR-1B-1A5-22 |
|---|---|---|---|---|
| Pump capacity | 16.7 cm³/rev | 16.7 cm³/rev | 16.7 cm³/rev | 16.7 cm³/rev |
| Pressure adjustment | 6.5–10.5 MPa | 1.5–3.5 MPa | 3.0–7.0 MPa | 9.0–14.0 MPa |
| Shaft key width | 4.76 mm | 4.76 mm | 4.76 mm | 4.76 mm |
| Mounting | Flange type | Flange type | Flange type | Flange type |
| Design / option | 22 / no U option | 22 / no U option | 22 / no U option | 22 / no U option |
No verified differences are recorded for these comparison fields. Confirm the full nameplate and suffixes before choosing a replacement.
How to check the fit
Check the design revision first
Match the shaft key, coupling, flange and drain connections. Design 21 and design 22 have different shaft key widths; matching the family name is insufficient.
Check duty and drive speed
Use the applicable revision to verify pressure, required flow and input speed. Peak pressure is not a continuous working-pressure setting.
Product information
Model & Configuration
Manufacturer catalog and model-code reference. Confirm the supplied unit against its nameplate and the applicable manual.
| Brand | NACHI |
|---|---|
| Model number | VDR-1B-1A4-22 |
| Series | VDR |
| Product type | Variable volume vane pump |
| Mounting | Flange type |
| Pump capacity | 16.7 cm³/rev |
| Pressure adjustment range | 6.5–10.5 MPa |
| Peak pressure | 21 MPaPeak pressure is not a continuous working-pressure setting. |
| Speed range | 800–1800 min⁻¹ |
| Shaft key width | 4.76 mm |
| Rotation | Clockwise viewed from shaft end |
| Catalog weight | 9 kg |
Selection & Installation
- Confirm the complete nameplate, supplied configuration and condition before ordering.
- Match the complete model, shaft key, coupling, flange, port and drain dimensions. Design 21 and design 22 use different shaft key widths.
- Verify working pressure, loaded flow and input speed using the applicable design revision. Peak pressure is not continuous operating pressure.
Manufacturer documentation
Reference information reviewed September 2026. Check the applicable revision for your equipment.
More in Hydraulic Pumps
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VDR-1B-1A3-22
Variable volume vane pump
- Pump capacity
- 16.7 cm³/rev
- Pressure adjustment
- 3.0–7.0 MPa
- Shaft key width
- 4.76 mm
- Mounting
- Flange type
- Design / option
- 22 / no U option
VDR-1B-1A5-22
Variable volume vane pump
- Pump capacity
- 16.7 cm³/rev
- Pressure adjustment
- 9.0–14.0 MPa
- Shaft key width
- 4.76 mm
- Mounting
- Flange type
- Design / option
- 22 / no U option