The 800159891 Spiral Clamp is a genuine XCMG heavy-duty hose clamp designed for motor grader hydraulic and fuel systems. This spiral clamp provides secure, vibration-resistant fastening of hoses to brackets and fittings. The 800159891 spiral clamp features a unique helically wound spring steel band that applies constant tension even as hoses compress or expand with temperature changes. It is a critical component for maintaining leak-free connections on GR series graders.
The 800159891 Spiral Clamp is manufactured from high-carbon spring steel (SAE 1070) with a zinc-plated finish for corrosion resistance. The clamp has a nominal diameter range of 25–32 mm (1.0″–1.25″), making it suitable for medium-sized hydraulic hoses. The spiral design provides 360-degree uniform clamping force without damaging the hose outer cover. As a genuine XCMG part, it matches the original spring rate and diameter specifications exactly, ensuring proper sealing without over-compression.
Engineered for extreme durability, the 800159891 Spiral Clamp withstands continuous vibration up to 500 Hz and temperatures from -40°C to +120°C. The zinc plating passes 96 hours of salt spray testing, making it suitable for coastal and winter road applications. Each clamp is 100% inspected for coil geometry, gap, and surface finish. Using OEM spiral clamps prevents hose chafing, blow-offs, and fluid leaks that can cause costly downtime and safety hazards.
| Parameter | Specification |
|---|---|
| OEM Number | 800159891 |
| Product Name | Spiral Clamp (Helical Hose Clamp) |
| Brand | XCMG (Genuine OEM) |
| Material | High-carbon spring steel (SAE 1070) |
| Finish | Zinc-plated, yellow passivated (96h salt spray) |
| Clamp Diameter Range | 25 – 32 mm (1.0″ – 1.25″) |
| Band Width | 8 mm |
| Wire Diameter | 2.5 mm |
| Number of Coils | 3.5 turns |
| Clamping Force (at mid-range) | 180 N ±15% |
| Temperature Range | -40°C to +120°C |
| Installation Tool | Spiral clamp pliers (not included) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited cycles |
Aftermarket spiral clamps often use low-carbon steel that loses tension or corrodes quickly. The genuine 800159891 Spiral Clamp from XCMG is manufactured from hardened spring steel with a controlled coiling process that ensures consistent clamping force. Independent tests show that OEM clamps maintain 95% of initial tension after 10,000 vibration cycles, while generic clamps lose up to 40%. This reliability prevents hoses from loosening and leaking, especially on high-vibration grader components.
Each 800159891 Spiral Clamp is traceable to its production batch, with records of wire tensile strength and coil geometry. The clamp is stamped with the XCMG part number for easy identification. XCMG’s quality control includes random sampling for salt spray testing (ASTM B117) and force-deflection measurement. Only clamps that meet all specifications are packaged, ensuring consistent performance for every customer.
Installing the 800159891 Spiral Clamp requires special spiral clamp pliers. Open the clamp by squeezing the plier handles, then slip the open coils over the hose. Release the pliers to allow the clamp to contract around the hose. Position the clamp so that the end coils are evenly spaced. Do not use standard pliers or cutters, as these can damage the zinc coating or deform the coils. The clamp should be snug but not cutting into the hose.
Inspect the 800159891 Spiral Clamp every 500 hours for signs of rust, cracks, or loss of tension. If the clamp shows any red rust or if the coils can be easily opened by hand, replace it immediately. When replacing a hose, always install a new clamp of the same size. Store spare clamps in a dry area away from chemicals. Keep a variety of sizes (25-32mm, 32-38mm) in your parts inventory for quick repairs.
A loose or corroded hose clamp allows hydraulic oil to seep past the fitting, leading to slow leaks that attract dirt and cause component staining. The genuine 800159891 Spiral Clamp provides constant tension that compensates for hose compression and thermal expansion, maintaining a leak-proof seal over the life of the hose. Operators report that using OEM spiral clamps eliminates the need for frequent re-tightening and reduces fluid top-ups by 60%.
In a fleet study of 25 XCMG GR215 graders, those equipped with genuine 800159891 Spiral Clamps on all hydraulic suction and return lines experienced 80% fewer clamp-related leaks over 3,000 hours compared to machines using worm-drive clamps. The spiral design also does not damage the hose outer cover, extending hose life by up to 30%. For contractors who demand clean, reliable machines, OEM spiral clamps are a simple upgrade with significant benefits.
XCMG’s spring coiling line uses CNC wire formers with laser diameter control. The 800159891 Spiral Clamp is wound from precision-drawn wire, then heat-treated to relieve residual stress. After coiling, the clamp is zinc-plated in a barrel finishing line that ensures even coating on all surfaces. The final step is a passivation dip that provides a yellow chromate finish for maximum corrosion resistance.
All 800159891 Spiral Clamps are individually bagged in anti-static plastic and packed in boxes of 10 or 50. Each box includes a certificate of conformance with plating thickness and hardness data. XCMG’s global supply chain ensures fast delivery to any location, with emergency shipments available through the contact buttons above.
The 800159891 Spiral Clamp directly replaces original part numbers 800159890 and 800159892. It is fully compatible with XCMG GR135, GR165, GR180, GR215, GR300, and GR350 motor graders. This clamp is used on hydraulic oil cooler lines, fuel return hoses, and transmission cooler hoses. For smaller hoses (19-25mm), use part 800159889; for larger hoses (32-38mm), use part 800159893. Always verify the hose OD before ordering.
When replacing a clamp, also inspect the hose for signs of wear or swelling. XCMG recommends replacing all clamps whenever hoses are replaced. Keep a set of 800159891 Spiral Clamps in your service truck for emergency repairs. For fleet operators, bulk orders of 50 or more clamps include a 15% discount and free ground shipping.
For custom diameters or alternative materials (e.g., stainless steel for marine environments), use the buttons above to contact our technical sales team. We can also supply clamps with special coatings for high-temperature applications. Always provide your grader’s serial number and a photo of the original clamp when ordering the 800159891 Spiral Clamp to ensure perfect fitment.
