Q: How do I confirm the JS450RT Stick-Mount eagle-beak shear matches my 40-50 ton excavator?
A: JISAN maintains a comprehensive hydraulic database for CAT, Komatsu, Sany, Volvo, and all mainstream 40-50T carriers. Our engineers calibrate this hydraulic shear for excavator to match your machine's exact 320-350 bar working pressure and 250-300 L/min flow rate. This precise matching prevents host machine overheating and ensures the massive 4150kN shearing force is delivered safely at the dipper arm joint.
Q: What advantage does the 2.4s cycle and 4150kN force bring to heavy structural demolition?
A: Ordinary heavy shears are slow. The JS450RT eagle-beak shear utilizes a patented differential valve optimized for 250-300 L/min flow, reducing cycle time to just 2.4 seconds. With 4150kN of massive shearing force, this power shear effortlessly slices through 30mm thick plates and 420# heavy I-beams, boosting daily yard output by over 30%.
Q: How does the 6100kg Hardox450 body handle extreme torsional stress?
A: Weighing a massive 6100kg, the shell and upper bracket adopt genuine SSAB Hardox450 wear-resistant steel. As a flagship scrap metal shear, it provides extreme rigidity to withstand the immense torsional stress of stick-mounted operations without deformation, ensuring a significantly longer lifespan than cheap carbon-steel alternatives.
Q: What after-sales support do you provide as a direct excavator shear manufacturer?
A: We offer a global 10-30-824 rapid service (10-min reply, 30-min plan, 8-hour parts dispatch).
12-month: shell, upper bracket, slewing bearing, hydraulic motor, cylinders
6-month: dual valve, pinion gear, speed-up valve
3-month: solenoid valve, pivot pins
1-month: alloy steel blades (breakage covered)
Every excavator shear passes 48 lab tests, and bulk replacement parts are always in stock.
Q: How does the JS450RT compare to the JS280RT in terms of cutting capacity?
A: The JS280RT fits 20-28T excavators with 2000kN force and a 500mm jaw. The JS450RT fits 40-50T carriers with a massive 4150kN force and a 702mm jaw opening to cut 30mm plates and 420# heavy I-beams. Mounting an oversized shear on a smaller carrier causes permanent hydraulic damage and voids the warranty.
Q: Why choose the Stick-Mount design over a Boom-Mount for ship-breaking and deep scrap piles?
A: While Boom-Mount maximizes leverage, Stick-Mount (forearm installation) provides ultimate wrist-like flexibility. This allows the demolition shear to maneuver deep into ship cargo holds or tight scrap piles, grabbing and cutting irregular steel structures at complex angles that a rigid boom-mounted setup cannot reach.
Q: What is the service life of the blades, and how do I maintain them?
A: The double-sided alloy steel blades on this metal shear for excavator can be flipped and reused for 3,000–5,000 hours under heavy scrap work. A 1-month warranty covers breakage and chunk peeling. Uniform wear is normal consumable loss. We recommend adjusting the blade clearance regularly to prevent thick structural steel from jamming the 702mm wide jaws.
Q: How does this mobile setup compare to a stationary scrap metal gantry shear?
A: Unlike a stationary gantry shear that requires massive concrete foundations and manual material feeding, this scrap shear for excavator brings extreme cutting force directly to the scrap pile or ship hull. It operates as a highly mobile unit, replacing the need for fixed infrastructure and saving millions in setup costs while maintaining the agility of a 40-50T excavator.
Q: Can it cut concrete or solid steel rails?
A: Only exposed rebar can be cut; solid concrete and rock are strictly prohibited to avoid edge chipping. Furthermore, solid steel rails and high-pressure vessels cannot be cut directly with standard blades to prevent catastrophic edge failure. For pure concrete demolition, a hydraulic pulverizer is required.
Q: Why choose the rotating model with a 922mm diameter over a fixed model?
A: The JS450RT functions as a rotating scrap metal rotary shear with a massive 922mm rotation diameter and 360° continuous rotation. This allows operators to grab irregular girders, ship components, and deep trench pipes from any angle, a flexibility that fixed models completely lack. Both versions share identical Hardox450 warranties.
Q: Will the warranty be shortened under 24-hour continuous operation?
A: The standard 12-month warranty assumes an 8-hour single shift. If your scrap yard or ship-breaking facility runs this equipment on a 24-hour schedule, the warranty period is halved. We recommend strict 4-hour lubrication intervals and custom thickened Hardox jaws for non-stop heavy-duty operations.
Q: Can the shear operate underwater in ship-breaking yards?
A: While frequently used in ship-breaking, prolonged submersion is not recommended. If used in wet or muddy conditions, immediate full cleaning and greasing are required after each shift. Rust or jamming caused by poor maintenance in watery environments is excluded from warranty.
Q: Is damage from improper Stick-Mount installation covered by warranty?
A: Stick-mount requires specific auxiliary pipelines routed securely along the dipper arm to the shear. New 40-50T excavators can fit this attachment directly, while refit kits are supplied for older machines. Motor or cylinder damage resulting from self-modified or poorly protected oil circuits is excluded.
Q: Will insufficient lubrication void the warranty?
A: Yes. You must grease all pivot points and the 922mm slewing bearing every 4 hours under heavy load. Bearing and pin failures caused by insufficient lubrication are considered maintenance negligence and are not covered under warranty.
Q: What are the cold-weather operation guidelines?
A: When operating below 0°C, perform a 5–10 minute no-load warm-up before cutting to protect the seals and hydraulic motor. Use low-temperature hydraulic oil if temperatures drop below -10°C. Freeze cracks resulting from poor winter maintenance are excluded.
Q: Is surface rust from outdoor rain storage covered?
A: A heavy-duty anti-rust coating is applied before delivery. However, surface rust caused by prolonged outdoor storage in the rain without a protective cover is excluded from warranty.
Q: What is the standard storage procedure when the 6100kg shear is unmounted?
A: Clean all metal slag, coat the Hardox shell with anti-rust oil, fully retract the cylinders, and wrap the unit in waterproof film if stored indoors. Outdoor storage without protection is not recommended for long-term idle periods.
Q: Are hydraulic leaks and slow movements covered under warranty?
A: Factory defects in the Finnish-imported piston motor, valves, and cylinders causing leaks or slow movements are covered for 12 months. Damage caused by self-adjusted pressure settings exceeding 350 bar or contaminated hydraulic oil is excluded.
Q: What voids the 12-month warranty on the slewing bearing and motor?
A: Tooth breakage on the slewing bearing due to insufficient greasing, or motor shaft breakage caused by hard impacts and unauthorized pressure tuning, will void the warranty for these specific components.
Q: What is the lead time for overseas spare parts delivery?
A: Warranty replacement parts are provided free of charge; the buyer bears all freight and tariff costs. As reliable mobile scrap shear manufacturers, we ensure delivery takes 3–7 days from overseas warehouses, 20–40 days by sea, or 7–15 days via air freight for emergency downtime situations.
Q: Can the JS450RT be customized for OEM orders?
A: Yes. We can customize jaw sizes (larger than the standard 702mm opening) and reinforce the stick-mount bracket to handle extra torsional stress. Custom frames still use Hardox450 steel, with a 7–15 day lead time after 3D drawing confirmation.
Q: What is the export process and payment terms?
A: The MOQ is 1 unit, with bulk discounts available for fleet orders of 10+ sets. We accept T/T, L/C, and Western Union (30% deposit before production). The process is: Confirm Model → Issue PI → Inspection → Shipment.
Q: Do export documents include the Hardox certificate?
A: Yes. Full export documentation includes the Commercial Invoice, B/L, CO, RCEP, CE certificate, official SSAB Hardox certificate, and factory inspection report for smooth global customs clearance.
Q: Is rust occurring during sea transit covered?
A: We use full anti-rust packing with desiccants for every 6100kg unit. Any minor surface oxidation occurring during long sea transit or post-delivery outdoor storage is considered normal and is excluded from warranty.
Q: What is the step-by-step warranty claim process?
A: 1. Provide the serial number, a fault video, and hour records. 2. Our engineers determine if the damage is a factory defect or man-made. 3. Free spare parts and video installation guides are provided for eligible claims. 4. Welding cost reimbursement (200 RMB) applies within 6 months.
Q: Does mentioning brands like CAT or Sany imply official cooperation?
A: No. Brand names are mentioned solely to indicate the compatibility of the JS450RT eagle-beak shear with various 40-50 ton carrier models. It does not imply official authorization, endorsement, or trademark infringement by these manufacturers.
