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6686703
Green Hydraulic
6686703
Standard export carton/plywood case
Yes
ISO9001，CE
• Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Key Shaft and Spline shaft
1 set
Product Description
The Bobcat 6686703 is a heavy-duty, fixed-displacement external gear pump engineered as a direct OEM replacement for compact loader hydraulic systems that demand proven reliability and consistent high-pressure output. Featuring a rugged cast iron construction, the 6686703 is specifically designed to deliver dependable power for manual control machines, making it an ideal choice for Bobcat skid-steer and compact track loaders where performance and durability are non-negotiable.
Specifications
| Parameter | Specification |
| Part Number | 6686703 (supersedes 6681602, 6681595, 6681580, 6678042) |
| Type | External fixed-displacement gear pump |
| Construction | Heavy-duty cast iron housing |
| Displacement | 0.85 in⊃3;/rev (≈13.9 cm³/rev) |
| Rated Flow | 6.62 GPM @ 1800 RPM |
| Max Continuous Pressure | 3,650 psi (252 bar) |
| Rated Speed | 2,000 RPM |
| Max Speed | 3,600 RPM |
| Mounting Flange | SAE “A”, 2-bolt pattern |
| Bolt Circle | 4.17 in (105.9 mm) |
| Shaft Type | 9-tooth spline, counterclockwise (CCW) rotation |
| Shaft Major OD | 1.25 in (31.75 mm) |
| Port Connections | Inlet: SAE #12 (1 1/16"-12 UNF) |
| Outlet: SAE #10 (7/8"-14 UNF) | |
| Weight | ~18 lbs (8.2 kg) |
| Applications | Bobcat skid-steer loaders (753, 763, 773, S130, S160, S175, S185) & compact track loaders (T140, T180, T190, T200) with manual hand controls |
| Condition Option | 6686703REM (remanufactured version) |
Applications
Applications
Bobcat Skid-Steer Loaders: A primary choice for 753, 763, 773, S130, S160, S175, and S185 models with manual hand controls, delivering dependable power for lift, tilt, and auxiliary hydraulic functions.
Compact Track Loaders: Optimized for T140, T180, T190, and T200 series machines, where the pump’s cast iron construction and high-pressure capability ensure long-term durability in tough construction and landscaping environments.
Construction & Demolition Equipment: Widely used in loaders operating in high-cycle, high-pressure applications such as debris handling, concrete work, and site cleanup, where consistent hydraulic performance is critical.
Landscaping & Agriculture: Ideal for compact loaders used in material handling, grading, and farm maintenance, offering a reliable power source that withstands the vibration and contamination common in outdoor, dusty environments.
Utility & Rental Equipment: Frequently employed in rental fleet loaders, where the pump’s drop-in fit and robust design reduce downtime and maintenance costs while meeting the demands of frequent use by varying operators.
Factory&FAQ
6686703 pumps are typically packaged securely to prevent damage during transit. The packaging includes:
Protective Wrapping: To safeguard the pump from environmental damage.
Custom Crates: For larger, heavier pumps, ensuring safe handling.
Documentation: Includes installation, maintenance instructions, and warranty details.
Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.
OEM-Exact Fit & Performance: Designed to match the original mounting, porting, and flow characteristics of the factory pump, ensuring seamless compatibility without modifications.
High-Pressure Rated Construction: Built with heavy-duty cast iron housing and precision-machined gears to handle continuous pressures up to 3,650 PSI, making it more durable than generic replacement pumps.
Proven Compatibility with Bobcat Manual Systems: Calibrated specifically for hand-control loader systems, delivering the precise flow required for lift, tilt, and auxiliary functions in Bobcat machines.
The 6686703 is engineered for the demanding cycles of compact loader hydraulics:
Continuous Operating Pressure: Up to 3,650 PSI (252 bar).
Intermittent/Peak Pressure: Rated for peak pressures typical of loader hydraulic systems.
This robust pressure rating makes it ideal for powering high-force lift and tilt functions in construction and landscaping applications.
Yes, the 6686703 is a direct, factory-approved replacement for several earlier Bobcat pump part numbers, including:
6681602
6681595
6681580
6678042
To ensure a successful swap, verify the machine’s control type (manual hand controls), mounting flange (SAE “A” 2-bolt), shaft type (9-tooth spline), and displacement match.
To protect the gears and seals, the following is recommended:
Oil Type: Premium mineral-based hydraulic fluids with strong Anti-Wear (AW) additive packages, compatible with Bobcat specifications.
Viscosity: Standard ISO VG32 to VG68, matching the loader’s recommended operating viscosity range.
Filtration: Cleanliness is vital for pump life. A minimum filtration of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging gear faces and seals.
The pump is calibrated for the operating speeds of Bobcat compact loaders:
Rated Operating Speed: 2,000 RPM.
Maximum Speed: 3,600 RPM.
Operating within this range ensures optimal flow, efficiency, and pump longevity under typical loader duty cycles.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
Please provide the following details:
Model or displacement
Working pressure
Speed
Quantity
We will reply within 12 hours with a competitive quotation.
6686703 pumps are manufactured in compliance with international standards, ensuring high performance and reliability:
ISO 9001: Certified for quality management systems.
CE Certification: Ensures compliance with European safety, health, and environmental protection standards.
RoHS Compliance: Ensures the pump does not contain hazardous materials.
Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.
1.What's our advantages?
Factory established in 2005;
With a great deal of production experience;
80+ employees become the professional team;
Constant updated ERP system ensure efficiency of work;
Sophisticated equipment ehanced the accuracy of products;
Professional salesmen provide the greast service;
With a large number of famous customers all over the world;
Great after-sales service;
With the long term cooperation with famous logistics and express company in China,provide the better goods service.
Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.
Of course we can. Just send me your logo we can make it for you.
America(40.5%):USA, Canada, Argentina, Brazil
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.
Others(5.8%).
The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.
All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.
To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.
Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.
