LF NBL4-D50F 21 MPa Medium-Pressure Hydraulic Gear Pump

Product Overview

Pressure information includes a 200 bar operating-pressure entry and a customizable pressure field with 21 MPa stated as maximum pressure. The pump is identified as a one-stage model with 240 W power, 0.5 HP maximum horsepower, and a 1/4-inch connection size.

Published dimensions are 214 × 214 × 313 mm, and the listed product weight is 38.5. The single-item package is 22 × 22 × 32 cm with 38.5 kg gross weight.

Technical Specifications

Key Features

• NBL4-D50F Model Identity: Use the full LF NBL4-D50F designation to distinguish this pump from other NBL sizes. The model alone does not confirm mechanical compatibility.
• 50 L/min Title Specification: The product title lists a flow of 50 L/min, while maximum flow rate is marked customizable in the attributes. Buyers should confirm whether 50 L/min applies at the intended speed and operating condition, and ensure the selected quotation records the required flow explicitly.
• 21 MPa Maximum Pressure: The customizable pressure entry identifies 21 MPa as maximum pressure, and the operating-pressure field states 200 bar. Guidance is to establish continuous and peak duty separately, set system protection accordingly, and avoid using the maximum figure as an assumed continuous rating.
• 1,200–1,800 rpm Range: A speed range of 1,200–1,800 rpm is listed. This range supports comparison with an available prime mover, but the selected speed should also be checked against required flow, inlet conditions, temperature, and the final pump configuration before commissioning.
• One-Stage Construction: The record describes a single-stage gear medium-pressure pump. A one-stage layout can simplify model identification for a straightforward pump circuit. Buyers replacing a multi-section or tandem unit should not assume this product provides separate stages or independent outlets.
• Defined Shipping Footprint: The source provides both product and package dimensions, with a single-item gross weight of 38.5 kg. These values are useful for early handling and freight estimates. Confirm lifting, packing, and final weight details before dispatch, especially when coordinating consolidated shipment.

Applications

Excavator and industrial hydraulic system use appears directly in the product title, and the attributes name the hydraulic machinery industry. The application list below should be treated as a guide for qualification rather than evidence that the pump fits every machine in those groups.

• Excavator hydraulic systems requiring verified NBL4-D50F compatibility
• Industrial hydraulic systems operating within the confirmed pressure duty
• Hydraulic machinery projects targeting the listed 50 L/min reference
• Single-stage pump replacements using a 1,200–1,800 rpm drive
• Custom builds where flow, pressure, and structure require confirmation

Selection Guide

For a replacement, record the old pump nameplate and measure the shaft, mounting pilot, bolt pattern, port type, port orientation, and available installation space. Compare those details with an NBL4-D50F drawing. The published 214 × 214 × 313 mm product dimensions are useful for screening but are not a complete interchange specification.

For a new system, define required flow at the chosen speed, normal and peak pressure, fluid, temperature, inlet conditions, rotation, available input power, filtration, and duty cycle. Ask for confirmation that the 50 L/min title value and 200 bar operating entry apply to the selected build before finalizing circuit settings.

Ordering Information

The minimum order is one set, and the source record does not state a public price. Submit the full model NBL4-D50F, quantity, target flow, drive speed, continuous and peak pressures, rotation, shaft and mounting interfaces, port requirements, fluid, and installation drawing. Flow, pressure, and structure are marked customizable, so the approved quotation should state the final configuration and packing data.

Frequently Asked Questions

Q: What flow is stated for the NBL4-D50F?

A: The product title states 50 L/min. The maximum-flow attribute is marked customizable, so buyers should ask for written confirmation of flow at the intended speed and pressure. Do not assume that a title value applies unchanged to every configuration or operating condition.

Q: What is the listed pressure capability?

A: The source shows 200 bar in the operating-pressure field and states 21 MPa as maximum pressure. Because 200 bar and 21 MPa represent different levels, define normal and peak duty separately and have both confirmed for the ordered pump.

Q: Is this pump listed for excavators?

A: Yes. Excavator and industrial hydraulic system use is included in the title, and hydraulic machinery industry use appears in the attributes. Exact machine compatibility still depends on model, interface, flow, pressure, rotation, and drive requirements.

Q: What are the product and package dimensions?

A: Product dimensions are listed as 214 × 214 × 313 mm. The single-item package is 22 × 22 × 32 cm, with a gross weight of 38.5 kg. Request the final drawing and shipping confirmation before relying on these values.

Q: How should the pump be prepared for startup?

A: As general guidance, confirm clean fluid, correct rotation, secure alignment, unobstructed inlet piping, proper port connections, priming instructions, and system pressure protection. Use the instructions issued for the supplied NBL4-D50F configuration because the source page does not include a complete startup procedure.