How to select the correct sprocket for my chain?

Match the pitch, number of teeth, and bore size. Use our selection table or contact our engineers for assistance.

When should I replace a sprocket?

Replace when tooth tips become hooked, worn thin, or chain jumps. Running a worn sprocket will destroy a new chain quickly.

What lubrication is best for roller chains?

Use ISO VG 150–220 oil for general applications. Grease is not recommended for high-speed drives.

How to choose between classical and narrow wedge V-belt sheaves?

Narrow wedge (SPB/SPC) transmits 1.5–3x more power in the same space, ideal for compact drives.

What is backlash and how to minimize it in gear racks?

Backlash is free movement between teeth. Use twin pinion preload or specify precision ground gears (DIN 5).

What axle ratio do I need for towing?

Higher ratio (e.g., 4.10:1) gives better torque for towing; lower ratio (3.31:1) saves fuel for highway.

How to measure correct PTO shaft length?

Measure from tractor PTO stub to implement input with both hitched and implement on ground; add 2-3 inches for clearance.

What is the difference between QD and taper lock bushings?

QD uses a split flange and bolts; taper lock uses a single clamping bolt. Both are interchangeable for most sizes.

How to select the right coupling type?

For high misalignment use jaw or gear coupling. For high precision use disc coupling. For shock absorption use grid coupling.

What oil to use for an agricultural gearbox?

EP 80W-90 or 85W-140 gear oil. Change every 500–1000 hours.

How to calculate hydraulic cylinder force?

Force = Pressure × Piston area. Example: 4" bore at 2500 psi = 31,400 lbs.

How do I choose the right air compressor size?

List all air tools and their CFM consumption at 90 PSI. Add 20% margin. Our engineers can calculate for free.

Oil-sealed vs dry vacuum pump – which one for my process?

Oil-sealed gives deeper vacuum (10⁻³ mbar) but needs oil changes. Dry scroll is clean, maintenance‑free, good to 10⁻² mbar.

What substrates can a CI Flexo Press print on?

PE, PP, BOPP, PET, paper, and aluminum foil. Thickness 12–250 microns.

What is the minimum VOC concentration for self-sustaining RTO operation?

Above 3% LEL, the RTO can run with zero auxiliary fuel.

Bucket Cylinder For Kato Small Excavator HD820R820V

Upgrade your Kato HD820R820V small excavator with the Raydafon Group Bucket Cylinder—a precision-engineered replacement designed for durability and seamless performance. Crafted from high-strength materials, it ensures reliable digging power in tight spaces, reducing downtime for contractors and operators. Feel confident tackling tough jobs with enhanced efficiency. Its superior build and compatibility set it apart, delivering the robust support you need to get the job done right.

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Product Description

Bucket Cylinder For Kato Small Excavator HD820R820V – Heavy‑Duty Hydraulic Performance

The Bucket Cylinder for Kato Small Excavator HD820R820V is a precision‑engineered hydraulic actuator that controls the lifting, lowering, and tilting of the bucket in excavators, backhoes, and loaders. Designed to withstand high pressure and heavy loads, it delivers smooth, responsive operation even in the most demanding construction and agricultural environments.

Technical Specifications

Below are the standard specifications for the Kato HD820R/820V bucket cylinder. Custom configurations are available upon request.

Parameter	Specification
Compatible Models	Kato HD820R, HD820V small excavators
Cylinder Type	Single‑acting or double‑acting (customizable)
Body Material	High‑strength steel or aluminum alloy
Seal Material	Polyurethane / Nitrile rubber (NBR)
Surface Treatment	Corrosion‑resistant coating (zinc plating or anodized)
Maximum Operating Pressure	Up to 25 MPa (customizable)
Bore Diameter	Standard OEM dimensions (consult factory for exact sizes)
Stroke Length	Standard OEM stroke (custom lengths available)
Certifications	ISO 9001, TUV, CE

Key Features & Benefits

High Strength and Durability: Manufactured from high‑grade steel or aluminum alloy to withstand extreme pressure and heavy loads. Designed with wear and corrosion resistance to extend service life in harsh environments.
Efficient Hydraulic Operation: Utilizes hydraulic oil pressure for smooth extension and retraction. Rapid response to control commands delivers powerful push/pull forces for heavy‑duty tasks.
Flexible Configurations: Choose between single‑acting (hydraulic force in one direction) or double‑acting (force in both directions) cylinders. Telescopic variants are also available for space‑constrained applications.
Direct Replacement: Engineered as a perfect OEM replacement for Kato HD820R and HD820V excavators, ensuring seamless installation and compatibility.
Wide Application: Suitable for construction equipment, agricultural machinery, excavators, loaders, and more.

Design Considerations & Selection Criteria

Bearing Capacity: Engineered to withstand dynamic stress and impact loads without deformation or failure.
Advanced Sealing: Equipped with piston and rod seals made from wear‑resistant polyurethane and nitrile rubber to prevent leakage and maximize service life.
Corrosion Protection: Surface coatings and material selection ensure resistance to rust and chemical degradation.
Safety Devices: Integrated overflow valves and pressure relief valves prevent over‑pressurization and accidents.
Ease of Maintenance: Designed for simple disassembly, inspection, and part replacement with clear maintenance guidelines.

Sealing & Lubrication

The cylinder incorporates high‑performance seals – including piston seals and rod seals made of polyurethane and nitrile rubber – to ensure zero leakage. The cylinder body and threaded surfaces are finely machined for improved wear resistance. Regular lubrication with the recommended hydraulic oil is essential to maintain smooth, efficient operation.

Maintenance & Troubleshooting

To maximize the service life of your bucket cylinder, follow these routine maintenance practices:

Perform regular visual inspections for leaks, cracks, or wear.
Ensure proper lubrication with hydraulic oil at recommended intervals.
Replace seals promptly when signs of degradation appear.
Calibrate operating pressure and stroke settings as needed.
Follow the manufacturer’s installation guidelines, including alignment and torque specifications.

Safety & Environmental Considerations

Always adhere to safety protocols when operating or servicing hydraulic cylinders – wear appropriate protective gear and follow the operation manual. Dispose of hydraulic oil and other materials in accordance with local environmental regulations to minimize ecological impact.

Frequently Asked Questions (FAQ)

Q1: What excavator models is this bucket cylinder compatible with?
A: This cylinder is specifically designed for Kato small excavator models HD820R and HD820V. For other models, please contact our sales team for compatibility verification.

Q2: What materials are used in this hydraulic cylinder?
A: The cylinder body is manufactured from high‑strength steel or aluminum alloy, with piston and rod seals made of wear‑resistant polyurethane and nitrile rubber to ensure durability and leak prevention.

Q3: How do I choose between single‑acting and double‑acting cylinders?
A: Single‑acting cylinders apply hydraulic pressure in one direction (usually extension) and rely on gravity or external force for retraction. Double‑acting cylinders apply pressure in both directions, offering more precise control. Choose based on your specific operational requirements.

Q4: What maintenance is required for this bucket cylinder?
A: Regular maintenance includes periodic checks for leaks, proper lubrication with hydraulic oil, seal replacement when worn, and calibration checks to ensure smooth operation. Follow the manufacturer’s guidelines for installation and servicing.

Bucket Cylinder for Kato HD820R820V - high-strength steel hydraulic cylinder

Cylinder head and seal details for Kato excavator bucket cylinder

Hydraulic oil pipes and spare parts for bucket cylinder assembly

Cushion collar and internal components for HD820 bucket cylinder

Bushings and mounting parts compatible with various excavator models

Factory production line for hydraulic cylinders - quality manufacturing

About the Manufacturer – Songte Hydraulic Cylinders

We are a leading manufacturer and wholesaler of hydraulic cylinders, specializing in replacement cylinders for construction and agricultural machinery. With a complete product range and a strong presence in both domestic and international markets, we adhere to the highest quality standards.

Our state‑of‑the‑art workshops employ industrialized production management and continuous process improvement to deliver products with high precision, durability, and performance. We hold ISO 9001, TUV, and CE certifications, and offer full customization services to meet diverse customer requirements.

Our commitment extends beyond manufacturing – we provide professional pre‑sales consultation, international shipping support, and responsive after‑sales service. Every cylinder is backed by rigorous testing and quality control to ensure reliable operation in the field.

Author: lyl – Senior Hydraulic Engineer, Songte Hydraulic Division

Ordering Information

Lead Time	7–15 days for standard sizes; 20–30 days for custom orders
Packaging	Export‑grade wooden crates with protective coating
Shipping	Worldwide via sea, air, or express (DHL/FedEx)
Warranty	12‑month manufacturer warranty against defects
Customization	Bore size, stroke, mounting brackets, and seals available on request