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-1A2-U-22
NACHI VDR-1B-1A2-U-22 is a flange-mounted VDR variable volume vane pump. The 1A2 catalog configuration provides 16.7 cm³/rev capacity and a 1.5–3.5 MPa pressure adjustment range, with 30 L/min no-load flow at 1800 min⁻¹.
Model: VDR-1B-1A2-U-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/revBase-model catalog reference; the U configuration still needs confirmation.
- Pressure adjustment
- 1.5–3.5 MPa
- Shaft key width
- 4.76 mm
- Mounting
- Flange type
- Design / option
- 22 / U option · confirmConfirm the U-option connections and regional configuration.
Confirm this configuration
- U option: confirm the regional configuration and exact nameplate. Base-model reference values do not verify the U variant.
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-1A2-U-22 | VDR-1B-1A2-22 | VDR-1B-1A3-22 | VDR-1B-1A4-22 |
|---|---|---|---|---|
| Pump capacity | 16.7 cm³/revConfirm configurationBase-model catalog reference; the U configuration still needs confirmation. | 16.7 cm³/rev | 16.7 cm³/rev | 16.7 cm³/rev |
| Pressure adjustment | 1.5–3.5 MPa | 1.5–3.5 MPa | 3.0–7.0 MPa | 6.5–10.5 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 / U option · confirmConfirm configurationConfirm the U-option connections and regional configuration. | 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-1A2-U-22 |
| Series | VDR |
| Product type | Variable volume vane pump |
| Mounting | Flange type |
| Pump capacity | 16.7 cm³/rev |
| No-load flow at 1800 min⁻¹ | 30 L/min |
| Pressure adjustment range | 1.5–3.5 MPa |
| Allowable peak pressure | 14 MPa |
| Speed range | 800–1800 min⁻¹ |
| Catalog weight | 9 kg |
| Rotation | Clockwise viewed from shaft side |
| Shaft key width | 4.76 mm |
Selection & Installation
- Confirm the complete nameplate, condition and configuration before placing an order.
- Check shaft key width, coupling, mounting and drain connections against the applicable design revision.
- The U option needs confirmation against the exact regional specification and nameplate.
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-1A4-22
Variable volume vane pump
- 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