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LF QT450/42CrMo Medium-Pressure Internal Gear Pump

This LF medium-pressure gear pump is presented as an internal gear transmission unit made with QT450 and 42CrMo materials. The title highlights a 31.5 cc/rev version, while the attribute set gives a broader available flow range of 10–125 cc/rev for configuration review.

  • Detailed description
Parameter

Product Overview

Published pressure data includes 18 MPa, or 180 bar, rated pressure and 21 MPa, or 210 bar, maximum pressure. The product attributes also show an operating-pressure entry of 100 bar. These figures should be distinguished during selection rather than combined into a single operating claim.

The source describes low-noise, long-life characteristics and lists one-stage construction with maximum speed choices of 1,200, 1,500, and 1,800 r/min.

Technical Specifications

Parameter Product Data
Displacement Other
Pump Type Gear Pump
Warranty 1 Year, 6Months
Connection Size 1/4 inch
Dimension (L*W*H) 17.2*17.2*31.2cm
Max. Horsepower 0.5 HP
Number of stages 1 Stage
Operating Pressure 100 bar
Power (W) customized
Pressure Customizable, Rated pressure 18Mpa (180Bar)
Weight 18
Max Pressure 21Mpa (210bar)
Flow Rate 10-125cc/rev
Max Speed 1200r/min, 1500r/min, 1800r/min
Material QT450, 42CrMo
Package Carton or wood Box
Minimum Order Quantity 1 set
Selling Units Single item
Single package size 18X18X32 cm
Single gross weight 24.000 kg

Key Features

  • QT450 and 42CrMo Materials: The listing names QT450 and 42CrMo as materials for this pump. These material references help distinguish the product family during sourcing. Request supporting documentation separately when required.
  • Broad Displacement Range: A 10–125 cc/rev range is published, and the product title identifies 31.5 cc/rev. Buyers should specify the exact displacement needed because the range covers multiple possible operating points. Pump output in a real circuit also depends on selected speed and system conditions.
  • Rated and Maximum Pressure: The product record states 18 MPa rated pressure and 21 MPa maximum pressure. It separately lists 100 bar as operating pressure. Procurement documents should identify the intended continuous pressure, peak pressure, and selected model so these source values are applied correctly.
  • Three Listed Speed Choices: Maximum speed options are shown as 1,200, 1,500, and 1,800 r/min. Guidance is to choose speed together with displacement and required flow, then verify inlet conditions and drive compatibility. A speed option should not be assumed suitable without confirmation for the selected pump size.
  • Low-Noise, Long-Life Positioning: Low noise and long life appear as qualitative listed features; no sound-pressure value, endurance duration, or test standard is provided. Define measurable acceptance criteria in the inquiry when needed.
  • Single-Item Packaging: The pump is sold as one item in a listed 18 × 18 × 32 cm package at 24 kg gross. Packaging is described as carton or wooden box.

Applications

The source positions this unit as a medium-pressure internal gear transmission pump. Because no detailed machine list is provided, the following points are purchasing and engineering contexts in which the published parameters may be evaluated, not claims of universal compatibility.

  • Medium-pressure hydraulic transmission systems matched to the ordered displacement
  • Replacement projects requiring QT450 and 42CrMo material references
  • Circuits designed around an 18 MPa rated pressure level
  • Equipment where listed 1,200–1,800 r/min choices suit the drive
  • Hydraulic builds prioritizing the source-listed low-noise characteristic

Selection Guide

Identify the required displacement first. The title calls out 31.5 cc/rev, while the attributes cover 10–125 cc/rev, so record the exact size on the request. Then calculate the required theoretical flow from displacement and speed, allowing the system designer to account for real operating losses without treating the catalog range as a guaranteed delivered flow.

Confirm the interface and duty in writing: shaft, mounting, rotation, 1/4-inch connection details, fluid, temperature, inlet condition, continuous pressure, peak pressure, and drive speed. The published dimensions are 17.2 × 17.2 × 31.2 cm, but a dimensional drawing is recommended before approving an interchange.

Ordering Information

MOQ is one set, and the listed price range is US$158–645. Price should be matched to the exact displacement and configuration rather than treated as a fixed quotation. Provide model, quantity, operating and peak pressures, displacement, speed, rotation, shaft, mounting, ports, fluid, and preferred carton or wooden-box packaging. Confirm warranty wording because the source attribute displays both one year and six months.

Frequently Asked Questions

Q: What displacement is available for this LF gear pump?

A: The title identifies a 31.5 cc/rev version, and the source attributes list a 10–125 cc/rev range. Specify the required displacement when requesting a quotation so the commercial offer, drawing, and operating details all refer to the same version.

Q: What are the published pressure values?

A: Rated pressure is stated as 18 MPa, or 180 bar, and maximum pressure as 21 MPa, or 210 bar. A separate operating-pressure field shows 100 bar. Ask the supplier to confirm which values apply to the ordered configuration and duty cycle.

Q: Which speeds are listed?

A: The record lists maximum speed options of 1,200, 1,500, and 1,800 r/min. Selection guidance is to match speed with displacement, required flow, inlet conditions, and drive characteristics, then document the approved speed for the chosen model.

Q: Does the source quantify the low-noise claim?

A: No. Low noise and long life are stated as qualitative features, but the source supplies no decibel value, test distance, duty cycle, or endurance hours. If these factors are acceptance requirements, request test conditions and agreed limits before purchase.

Q: What shipping details are available?

A: The single-item package is listed at 18 × 18 × 32 cm and 24 kg gross weight. Carton or wooden-box packaging is offered in the attributes. Confirm the final method, dimensions, and weight for the selected pump before arranging freight.

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