C102 Parker Cast Iron Gear Pump 104.9cc 172bar 2400rpm

Product Overview

The C101/C102 and G101/G102 series cast iron gear pumps are core products of the Parker Hannifin Commercial product line, specifically engineered for dump truck and trailer hoist systems and other heavy-duty mobile hydraulic applications. This series is the former Commercial Intertech product line.

The C101/C102 series features a maximum displacement of 104.9 cm³/rev (6.4 in³/rev) and a maximum flow rate of 27.7 GPM (104.9 L/min) . The G101/G102 series delivers a maximum displacement of 64.6 cm³/rev (3.94 in³/rev) and a maximum flow rate of 16.9 GPM (64 L/min) . All series are rated at 172 bar (2,500 psi) with speeds up to 2,400 rpm. The G101 and G102 series are based on the proven P30 gear pump platform.

Engineered with Parker’s signature three-piece cast iron construction and balanced thrust plates, the pumps deliver high volumetric efficiency (up to 94%) and excellent shock and contamination resistance. All C101/C102 series pumps feature an integrated directional control valve, relief valve, and load hold valve for seamless raise/hold/lower control.

Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with Parker Hannifin Commercial original equipment. All Parker brand names and model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer and is not an original Parker product.

Technical Specifications 

C101 / C102 Series

• Brand Series: Parker Commercial C101/C102 Series

• Product Type: Fixed Displacement Cast Iron External Gear Pump

• Construction: Three-piece cast iron construction

• Maximum Displacement: 104.9 cm³/rev (6.4 in³/rev) 

• Maximum Flow Rate: 27.7 GPM (104.9 L/min) 

• Rated Operating Pressure: 172 bar (2,500 psi) 

• Maximum Speed: 2,400 rpm

• Volumetric Efficiency: Up to 94%

• Rotation: CW / CCW / Bi-Rotational available

• Mounting: SAE

• Shaft Type: SAE

• Port Connection: NPT

• Port Location: Rear Ports

• Fluid Type: Standard Hydraulic Fluid / Phosphate Ester

• Maximum Fluid Temperature: 80°C (180°F) 

• Minimum Fluid Temperature: -20°C (0°F) 

• Viscosity Range: 50 – 7,500 SUS

• Maximum Weight: 32 kg (70 lb) 

• Integrated Valves: Directional control + Relief + Load hold

• Valve Actuation: Manual / Air shift available

• Thru-Drive Capability: No

G101 / G102 Series

• Brand Series: Parker Commercial G101/G102 Series

• Product Type: Fixed Displacement Cast Iron External Gear Pump

• Construction: Three-piece cast iron construction

• Maximum Displacement: 64.6 cm³/rev (3.94 in³/rev) 

• Maximum Flow Rate: 16.9 GPM (64 L/min) 

• Rated Operating Pressure: 172 bar (2,500 psi) 

• Maximum Speed: 2,400 rpm

• Volumetric Efficiency: Up to 94%

• Rotation: CW / CCW / Bi-Rotational available

• Mounting: SAE / DIN

• Shaft Type: SAE

• Port Connection: NPT

• Port Location: Rear Ports

• Fluid Type: Standard Hydraulic Fluid / Phosphate Ester

• Maximum Fluid Temperature: 80°C (180°F) 

• Minimum Fluid Temperature: -20°C (0°F) 

• Maximum Weight: 20.4 kg (45 lb) 

• Integrated Valves: Directional control + Relief + Load hold

• G101 Feature: Dual-shaft design – either shaft can serve as the drive input

• G102 Feature: Single-shaft design – more compact for space-limited installations

• Thru-Drive Capability: No

Key Technical Advantages

1. Three-Piece Cast Iron Construction – Extreme Durability

Parker’s signature three-piece cast iron construction provides excellent distribution flexibility and structural rigidity. The high-strength cast iron body delivers superior service life compared to aluminum alternatives under the high-pressure shocks, vibration, and high-contamination conditions typical of dump truck hoist systems.

2. Balanced Thrust Plates & Roller Bearings – High Efficiency & Long Life

Integrated balanced thrust plates minimize friction and internal leakage. Paired with roller bearings, friction losses are minimized while extending service life. Volumetric efficiency reaches up to 94%.

3. Integrated Valve Design – High System Integration

The C101/C102 series features a pump-valve integrated construction, combining the gear pump, directional control valve, and relief valve in a single unit. Standard integrated raise/hold/lower valve, relief valve, and load hold valve significantly reduce external valve groups, piping, and assembly labor costs.

4. Flexible Mounting & Rotation Options

Both C101/C102 and G101/G102 series support clockwise, counterclockwise, and bi-rotational configurations. The G101 series features a dual-shaft design – either shaft can serve as the drive input, accommodating various PTO mounting configurations. The G102 series is a single-shaft design for more compact installations.

5. Broad Speed & Temperature Range

Supports speeds up to 2,400 rpm with operating temperatures from -20°C to +80°C. Viscosity range of 50 – 7,500 SUS ensures stable flow characteristics from cold start to high-temperature continuous operation.

6. North American Standard Interface & 100% Drop-In Interchangeability

Strictly complies with SAE standard flanges, shafts, and port configurations. C101/C102/G101/G102 series are 100% interchangeable with Parker Commercial, Dynaco, Permco, Muncie, Metaris, and other brand equivalents.

7. 100% Simulated Duty-Cycle Testing

Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at rated pressure (172 bar) and full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• Dump Trucks: Body hoist and lower hydraulic systems

• Dump Trailers: Trailer hoist hydraulic systems

• Vocational & Municipal Equipment: Street sweepers, refuse trucks, etc.

• Compact Dump Trucks: G101/G102 series specifically designed for smaller trucks

Expert Maintenance Tips

1. Fluid Cleanliness Control

Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. Contaminated oil is the most common cause of premature pump failure. Install a ≤10 μm absolute filtration filter upstream of the inlet port.

2. Inlet Line Requirements

Three-line (3-line) circuits are recommended whenever possible for lower operating temperatures and return-line filtration capability. Inlet pressure must be maintained between 0.8–2.0 bar (absolute) to prevent cavitation.

3. Safety Operating Practices

Never work under a raised dump bed without first securely blocking the bed. A control lever locking device must be installed to prevent unintended bed rise during transit. Disengage the PTO from the pump/valve when in transit.

4. First-Start Priming Procedure

Before initial startup, prime the pump by bleeding air through the directional valve or a loosened outlet fitting. Perform 2–3 jog starts under no-load conditions until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.

5. Rotation Direction Confirmation

G102 direct-mount units require specification of rotation direction when ordering. G101 remote-mount units support bi-rotational operation. Always verify that the PTO drive rotation matches the pump before installation.

6. Viscosity & Temperature Monitoring

Recommended operating viscosity: 50 – 7,500 SUS. Operating temperature range: -20°C to +80°C. During cold starts when viscosity exceeds the recommended range, ensure adequate suction conditions or preheat the fluid.