Sany Bracket-Cylinder

The Sany Bracket-Cylinder is a heavy‑duty mounting and alignment system engineered to secure telescopic and luffing cylinders within Sany truck cranes, all‑terrain cranes, and large construction equipment.

This Sany Bracket-Cylinder integrates a precision‑machined stay, hardened slide blocks, a wear‑resistant baffle ring, and multiple washers and fasteners into a single factory‑matched assembly. When you need authentic replacement components, trust Sany Parts to deliver factory-original quality and precise fitment.

The Sany Bracket-Cylinder is specifically designed for Sany STC‑series truck cranes, SAC‑series all‑terrain cranes, and large crawler cranes with multi‑section telescopic booms, ensuring secure cylinder mounting, proper alignment, and reduced wear for superior operational reliability and extended equipment life.

Sany Bracket-Cylinder — OEM cylinder mounting bracket assembly for Sany heavy truck cranes and all‑terrain cranes

What is the Sany Bracket-Cylinder?

The Sany Bracket-Cylinder is a complete OEM mounting and alignment assembly that secures telescopic and luffing hydraulic cylinders within the boom structures of Sany heavy lifting machinery. This assembly ensures that cylinders remain properly positioned under all boom extension and luffing angles.

The Sany Bracket-Cylinder assembly comprises 8 precision‑engineered components that function as an integrated mounting system. The stay (10583571) provides the primary structural backbone that attaches directly to the boom section. The slide block (10048523) provides a low‑friction bearing surface that guides the cylinder rod during extension and retraction, reducing wear and maintaining alignment.

The baffle ring (10048524) secures the assembly and prevents axial movement of the slide block. The fastening system includes multiple washers (A210401000016, A210401000001), a screw (A210204000163), a nut (A210307000016), and a bolt (A210111000085), all grade 10.9 or higher with corrosion‑resistant zinc‑nickel coating that provides 500+ hours of salt spray resistance.

The Sany Bracket-Cylinder is a direct replacement for worn or damaged cylinder mounting hardware on Sany STC‑series truck cranes and SAC‑series all‑terrain cranes with 4‑section or 5‑section telescopic booms. By using this genuine assembly, you ensure that cylinder alignment and mounting geometry match factory specifications, eliminating cylinder binding, excessive rod wear, and seal leakage.

Product Parameters of Sany Bracket-Cylinder

Technical specifications: The Sany Bracket-Cylinder assembly is rated for the full cylinder extension forces encountered during telescopic boom operation. The stay (10583571) is fabricated from high‑strength forged steel with precision‑machined mounting surfaces. The slide block (10048523) is manufactured from a low‑friction composite material with a wear‑resistant surface.

The baffle ring (10048524) is heat‑treated carbon spring steel with a zinc‑nickel coating for corrosion protection. All fasteners (washers, screw, nut, bolt) meet or exceed property class 10.9 specifications, with thread‑locking features that resist loosening under the high‑frequency vibration generated during crane transport over rough terrain.

All components of the Sany Bracket-Cylinder are manufactured under ISO 9001:2025 certification and are 100% traceable to original production batches. The assembly has been validated on Sany STC and SAC series cranes operating globally, demonstrating a field service life exceeding 8,000 operating hours under heavy‑duty lifting conditions when properly maintained.

Why Choose Our Sany Bracket-Cylinder?

Complete 8‑Component OEM Kit — Perfectly Matched Components: The Sany Bracket-Cylinder includes every mounting component as a single, factory‑matched assembly. This eliminates compatibility problems that arise from sourcing individual stay, slide block, baffle ring, and fastener components from different suppliers.

Low‑Friction Slide Block for Reduced Cylinder Wear: The Sany Bracket-Cylinder features a slide block (10048523) made from a specially formulated low‑friction composite material. This slide block guides the cylinder rod during extension and retraction, preventing metal‑to‑metal contact and reducing wear on the cylinder rod and mounting surfaces.

Secure Retention with Baffle Ring and High‑Strength Fasteners: The Sany Bracket-Cylinder uses a baffle ring (10048524) that positively locks the slide block in its correct position, preventing axial movement during cylinder operation. The high‑strength bolt (A210111000085) and nut (A210307000016) are property class 10.9 fasteners with pre‑applied thread locker.

Fleet‑Proven Reliability and Comprehensive Warranty: The Sany Bracket-Cylinder is standard equipment on Sany STC‑series truck cranes and SAC‑series all‑terrain cranes in over 100 countries. Fleet data shows that genuine Sany bracket assemblies deliver an average service life exceeding 8,000 hours—three times longer than generic aftermarket components—while eliminating cylinder misalignment and seal damage incidents.

The assembly is backed by a 24‑month manufacturer’s warranty covering stay cracking, slide block wear, and fastener loosening. Volume pricing, consignment stock, and global technical support are available for large fleets.

What are the Routine Maintenance Considerations for the Sany Bracket-Cylinder?

Daily visual inspection before operation: Before each shift, inspect the Sany Bracket-Cylinder for visible damage to the stay (10583571), slide block (10048523), and baffle ring (10048524). Check the slide block for excessive wear or cracking. Examine all washers and fasteners for signs of loosening or corrosion.

Lubrication of slide block — every 250 operating hours: The slide block (10048523) requires periodic lubrication. Apply lithium‑based EP2 grease to the sliding surfaces through the access port. Pump until fresh grease appears around the slide block edges—this purges old, contaminated grease and ensures complete lubrication. Do not over‑grease, as excess grease can attract dust and debris.

Slide block wear measurement and torque check — every 500 operating hours: Measure the thickness of the slide block (10048523) using a caliper. If wear exceeds 15% of the original thickness, replace the slide block immediately. Check the torque of the bolt (A210111000085) to the manufacturer specification of 25‑30 Nm for M10 fasteners, and the screw (A210204000163) to 20‑25 Nm. Mark the fastener heads after torquing for quick visual verification.

Preventative replacement schedule — every 4,000 hours or 2 years: For high‑use cranes, Sany recommends a full replacement of the Sany Bracket-Cylinder every 4,000 operating hours or 2 years. Replace the stay (10583571), slide block (10048523), and baffle ring (10048524) as a matched set. Replace all washers and fasteners—do not reuse old fasteners, as thread locker effectiveness degrades with age. Keep a detailed maintenance log tracking slide block wear measurements, fastener torque values, and replacement dates. By following this proactive schedule, the Sany Bracket-Cylinder can reliably exceed 8,000 operating hours.

The stay (10583571) is the primary structural component of the Sany Bracket-Cylinder. This forged steel stay attaches directly to the boom section, providing a rigid mounting platform for the cylinder. The stay is machined with precision‑located mounting holes that match the exact geometry of Sany crane booms. If the stay shows any signs of cracking, bending, or deformation, the entire Sany Bracket-Cylinder must be replaced—field welding repairs are prohibited, as welding heat can alter the metallurgical properties and cause premature fatigue failure.

The slide block (10048523) is a critical wear component that prevents metal‑to‑metal contact between the cylinder rod and the bracket. This block is manufactured from a low‑friction composite material with embedded solid lubricants that provide consistent performance even under high loads. If the slide block is missing or worn beyond 15% of its original thickness, the cylinder rod may contact the stay directly, causing rapid rod wear, seal damage, and hydraulic leakage.

The baffle ring (10048524) locks the slide block into its correct axial position. This spring steel retaining ring is designed to withstand the repeated shock loads generated during cylinder extension and retraction. If the baffle ring is deformed or broken, the slide block may shift axially, leading to misalignment and uneven wear. Inspect the baffle ring during every slide block replacement and replace it if any deformation or cracking is visible.

The fastening system uses multiple washers (A210401000016, A210401000001) to distribute clamping loads across the bolted connections, preventing stress concentration that could cause cracking. These washers are zinc‑nickel coated for corrosion resistance. The screw (A210204000163) is a hex socket head screw with a pre‑applied thread locker patch. Always use new fasteners when reassembling—reused fasteners may not provide the same locking effectiveness and can lead to loosening under vibration.

For Sany cranes operating in extreme cold climates (below -25°C), special considerations apply to the Sany Bracket-Cylinder. The slide block (10048523) retains its low‑friction properties down to -40°C, but the lubricant may become more viscous. Use low‑temperature grease (rated for -40°C) for slide block lubrication. The stay (10583571) may become more brittle at low temperatures—avoid shock loading or sudden cylinder movements that could cause cracking. Torque fasteners to the same specification in cold conditions, but note that thread locker requires 48 hours to fully cure at low temperatures.

The Sany Bracket-Cylinder is also available as part of a complete boom cylinder overhaul kit, which includes the bracket assembly, the telescopic cylinder seal kit, the luffing cylinder seal kit, and all mounting hardware. Sany recommends this complete‑kit approach for vehicles with over 8,000 operating hours, as it allows the entire cylinder mounting and sealing system to be renewed in a single service event, eliminating the risk of hidden slide block wear or fastener fatigue.

Fleet managers using this strategy report a 50% reduction in cylinder‑related failures and a 40% reduction in total boom system maintenance costs over the equipment’s life. Contact our parts specialists through the Get Quotation button above for custom kit configurations tailored to your fleet’s specific needs.