101-1004-009 Hydraulic Motor

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Product details

The part number 101-1004-009 identifies a compact low-speed, high-torque hydraulic orbit motor from the Eaton Char-Lynn S Series. This hydraulic motor features a geroler design and is widely integrated into mobile and industrial hydraulic systems that require direct rotary drive without a gearbox.

1. Part Number Breakdown

· 101 — Series code: Char-Lynn S Series hydraulic motor.

· 1004 — Displacement code: nominal 10.0 in³/rev (approx. 164 cc/rev).

· 009 — Configuration code: typically corresponds to a 1.25-inch straight shaft with key, 4-bolt flange, and side ports.

2. Key Performance Parameters of the Hydraulic Orbit Motor

Item Parameter

Displacement 10.0 in³/rev (≈ 164 cm³/rev)

Max. Continuous Pressure Drop 2500 psi (≈ 172 bar)

Max. Intermittent Pressure Drop 3000 psi (≈ 207 bar)

Continuous Torque Output ≈ 3,980 lb-in (≈ 450 N·m)

Max. Continuous Flow 30 gpm (≈ 114 L/min)

Speed Range 10 – 693 rpm (continuous, depending on flow)

Max. Output Power ≈ 32 hp (≈ 24 kW)

3. Physical Configuration (Code -009)

· Shaft: 1.25-inch straight shaft with 1/4-inch square key, providing a robust interface in any hydraulic system.

· Flange: Standard 4-bolt flange (3.25-inch pilot, 4.188-inch bolt circle, 3/8-16 UNC bolts).

· Ports: Main ports are SAE 7/8-14 UNF O-ring side ports. A case drain line must be plumbed back to the reservoir to protect this hydraulic motor.

· Note: This configuration makes the hydraulic orbit motor dimensionally interchangeable with many industry-standard mounts.

4. Technical Features of the Hydraulic Motor

· Geroler design: Delivers high torque at low speeds, characteristic of a hydraulic orbit motor, perfect for direct-drive applications.

· Pressure-balanced plate: Maintains high volumetric efficiency throughout the motor's service life, ensuring reliable hydraulic system performance.

· Bi-directional: Symmetrical construction allows equal performance in both clockwise and counter-clockwise rotation, simplifying your hydraulic system circuit design.

· Compact and durable: Uses needle roller bearings and high-pressure seals, making this hydraulic motor suitable for demanding continuous-duty applications.

5. Typical Hydraulic System Applications

You will typically find the 101-1004-009 hydraulic orbit motor in the following hydraulic systems:

· Agricultural equipment (augers, small conveyors, seeders)

· Construction machinery (sweeper brushes, small mixers, compact trenchers)

· Industrial drives (winches, textile machinery, packaging equipment)

· Marine systems (small windlasses, capstans)

101‑1004‑009 Hydraulic Motor

Product Overview

Brand: Eaton (formerly Char‑Lynn, now affiliated with Danfoss)

Series: H‑Series low‑speed high‑torque gerotor orbit hydraulic motor

Model Code Breakdown:

‑ 101 : Code for H‑Series motors

‑ 1004 : Displacement and configuration code, displacement: 9.7 in³/r ≈ 159 cm³/r

‑ 009 : Design and seal version code

Key Technical Specifications

‑ Displacement: 159 cm³/r (9.7 in³/r)

‑ Mounting: 4‑bolt flange, pilot diameter 44.5 mm (1.75")

‑ Output Shaft: 25.4 mm (1") straight shaft with woodruff key

‑ Ports: 1/2"‑14 NPTF dry‑seal pipe thread

‑ Pressure Rating: Continuous 1650 psi (11.4 MPa), Intermittent 2250 psi (15.5 MPa)

‑ Torque Output: Approx. 2059 in‑lb (233 Nm) at continuous pressure

‑ Rotational Speed: Max continuous 353 RPM

‑ Flow Rate: Max continuous 15 GPM (57 L/min)

‑ Weight: Approx. 5.9 kg (13 lbs)

Features & Applications

‑ Features: Low‑speed high‑torque output, low starting pressure, high efficiency and smooth operation; bidirectional rotation with high‑pressure resistant shaft seal.

‑ Applications: Agricultural machinery (augers, harvesters), construction machinery, marine winches, railway maintenance equipment, etc.

101-1004-009 Hydraulic Motor: Core Analysis

This model is classified as ahydraulic motor, specifically ahydraulic orbit motor (also known as a gerotor motor), serving as a critical actuator within ahydraulic systemto convert hydraulic energy into rotational mechanical energy for driving load equipment.

I. Technical Characteristics and Classification

1. Structural Type

• Gerotor Gear Design: Utilizes an internal-meshing gerotor gear set (stator as the inner gear and rotor as the outer gear), with an eccentric mechanism enabling volumetric changes. This design offerscompact size, lightweight construction, and low starting pressure, making it suitable for low-pressure systems.

• Displacement and Pressure: Displacement typically ranges from8.2 cc to 500 cc, with continuous operating pressures up to10–225 bar(higher peak pressures possible). For example, certain models deliver11 N·mof continuous torque at 17.5 bar, equating to1.8 kWof power output.

• Speed Range: Low-speed variants operate as low as20 rpm, while high-speed models reach1,950 rpm, catering to diverse operational requirements.

2. Performance Advantages

• High Efficiency and Reliability: Mechanical efficiency exceeds85%, with minimal volumetric losses to reduce energy waste.

• Low-Speed Stability: Maintains smooth operation at extremely low speeds, avoiding crawling phenomena.

• Impact Resistance: Output shafts are equipped with tapered roller bearings to withstand high radial and axial forces, adapting to heavy-duty applications.

• Sealing and Pressure Resistance: Shaft seals endure pressures up to10 bar, preventing hydraulic fluid leakage and extending service life.

II. Application Scenarios and Selection Guidelines

1. Typical Applications

• Construction Machinery: Used in rotary mechanisms of excavators and cranes, requiring low-speed, high-torque output.

• Industrial Equipment: Essential for mold opening/closing in injection molding and die-casting machines, demanding precise position control.

• Agricultural Machinery: Applied in header lifting systems of combine harvesters, designed to operate in harsh environments.

• Specialized Machinery: Utilized in mining equipment and marine steering gear, requiring high reliability and shock resistance.

2. Selection Criteria

• Load Matching: Choose displacement based on torque and speed requirements to avoid underperformance or power waste.

• System Pressure: Ensure the hydraulic system’s maximum operating pressure does not exceed the motor’s rated pressure.

• Mounting Interface: Verify compatibility of output shaft dimensions and flange connections with the equipment.

• Environmental Adaptability: For high-temperature, dusty, or corrosive environments, select models with reinforced seals or specialized materials.

III. Maintenance and Troubleshooting

1. Routine Maintenance

• Hydraulic Fluid Cleanliness: Regularly replace filters to prevent contaminants from entering the motor.

• Temperature Control: Avoid hydraulic fluid overheating (which accelerates seal degradation) by installing coolers if necessary.

• Seal Inspection: Periodically check shaft seals and piping connections for leaks, replacing damaged components promptly.

2. Common Faults

• Insufficient Output Torque: May result from low hydraulic fluid viscosity, internal leakage, or port plate wear.

• Unstable Speed: Investigate pressure fluctuations, air ingress, or internal wear in the motor.

• Abnormal Noise: Could indicate bearing damage, piston seizure, or gear misalignment, requiring disassembly and inspection.

IV. Industry Trends and Alternative Solutions

1. Technological Advancements

• Smart Integration: Incorporation of sensors and electronic control modules for real-time monitoring and adaptive adjustment.

• Lightweight Design: Use of high-strength alloys to reduce weight while increasing power density.

• Energy Efficiency: Optimized flow path designs to minimize pressure losses and improve system efficiency.

2. Alternative Model Recommendations

• If the 101-1004-009 is unavailable, consider other models in the same series (e.g., 101-1004-012) or competitor brands (e.g., Eaton Char-Lynn’s hydraulic orbit motors). Prioritize comparisons of displacement, pressure ratings, and mounting dimensions.