112A 110A 111A 113A Parker Nichols Hydraulic Motor Replacement

The 110A, 111A, 112A, and 113A series low-speed high-torque (LSHT) orbital hydraulic motors manufactured by LIC Hydraulic (including specific configurations like 112A-088-AM-O-F, 112A-088-AM-0, 112A-088-AT-E, 112A-106-AT-1-S, and 112A-164-BM-0) are robust, compact, fluid-power actuators designed for light-to-medium-duty industrial and mobile machinery. In terms of mounting pilot dimensions, output shaft keyways, port profiles, and torque delivery curves, this series provides 100% drop-in interchangeability with the original Parker Nichols product lines.

As a B2B-focused manufacturer specializing in severe-duty hydraulic components, LIC breaks the constraints of long OEM lead times and high replacement premiums. Every 112A series motor undergoes 100% full-load simulated factory testing prior to shipment. Our motors maintain a non-pulsating, linear torque profile at low angular velocities while exhibiting exceptional radial load resilience, offering a rock-solid global sourcing alternative.

Technical Specifications

Accurate engineering data derived from standard catalog configurations for the 110A/111A/112A/113A series:

• Product Series: 110A / 111A / 112A / 113A Series LSHT Orbital Hydraulic Motor

• Benchmark Reference Codes: 112A-088-AM-O-F / 112A-106-AT-1-S / 112A-164-BM-0

• Displacement Code 088: Approx. 144 cm³/rev (8.8 cu in/rev)

• Displacement Code 106: Approx. 174 cm³/rev (10.6 cu in/rev)

• Displacement Code 164: Approx. 268 cm³/rev (16.4 cu in/rev)

• Continuous Operating Pressure: 140 bar (2000 psi)

• Intermittent Interfacial Peak Pressure: 175 bar (2500 psi)

• Continuous Output Torque: Up to 350 – 480 Nm (Subject to specific displacement configuration)

• Continuous Rotating Speed Range: 300 rpm to 650 rpm

• Maximum Continuous Flow Rating: 45 L/min to 57 L/min (12 to 15 GPM)

• Control Type: Fixed displacement, bi-directional fluid actuation

• Mounting Configurations: SAE 2-bolt / 4-bolt / Wheel mount configurations (AM, AT, BM options)

• Net Product Weight: Approx. 6.5 kg to 9.5 kg

Key Technical Advantages

• Precision Conjugate Gerotor Geometry: LIC integrates an inner gerotor gear set processed on ultra-precise multi-axis CNC grinding centers. The optimized tooth profile minimizes initial static starting friction, guaranteeing smooth, jerk-free rotational output down to 10 rpm without mechanical cogging or speed hunting.

• Integrated Spool Valve Architecture: The motor utilizes an advanced spool valve design where the flow distribution system is structurally integrated with the output shaft. This geometric layout reduces the overall axial length of the housing, allowing the motor to fit into tight footprints while minimizing cross-port volumetric power loss.

• Upgraded High-Capacity Radial Bearings: To meet the challenges of conveyor drives or sweeping equipment where substantial overhung loads (OHL) are present, LIC reinforces the primary shaft bearing assembly. The front bearings absorb severe radial and axial thrust forces directly, eliminating the need for bulky external pillow-block mechanics.

• High-Pressure Resilient Viton Shaft Seals: Equipped with premium-tier, high-pressure lip shaft seals, our motors withstand internal case backpressures up to 100 bar. In standard closed or open-loop bi-directional circuits, this feature eliminates the need for an external dedicated case drain line, drastically reducing plumbing costs.

Application Areas

The 112A and 110A series orbital motors are widely adopted across global B2B sectors due to their excellent torque-to-weight ratio:

• Agricultural & Forestry Machinery: Automated seed-metering drives in planters, reel belt systems in combine harvesters, and feed-roll drives in compact wood chippers.

• Municipal Sanitation Vehicles: Primary rotation drives for sweepers, under-body brushes, and articulation links in high-pressure street washing spray bars.

• Light Industrial Material Handling: Drive units for factory automation conveyors, sorters, and food-grade cleanroom belt systems.

• Compact Construction Automation: Mini-excavator track-travel pilot circuits and utility vehicle low-tonnage winches.

Expert Maintenance Tips

• Pre-Commissioning Housing Priming: When setting up a new replacement unit (e.g., replacing an old 112A-088-AM-O-F), always pre-fill the motor housing with clean hydraulic oil before connecting the main lines. Run the motor under zero load and low speed for the first 15 minutes to establish a hydrodynamic film and prevent dry friction.

• Monitor System Backpressure Thresholds: Although fitted with a high-pressure seal, if multiple motors are arranged in series, or if the return line is excessively long causing backpressure to consistently exceed 100 bar, the dedicated case drain plug must be removed and plumbed directly back to the reservoir to protect the seal assembly.

• Fluid Viscosity & Contamination Rigor: Maintain optimal operating oil temperatures between 30°C and 60°C. Solid particle contamination must be strictly managed to ISO 4406 19/16/13 specifications. Immediately change out fluids showing signs of oxidation or emulsification to safeguard the internal gerotor surface finishes.

Related Models :