Quality Excavator Telescopic Arm & Excavator Long Boom

Project Background: A South American contractor needed to replace their underperforming 22m CAT336 demolition boom that struggled with: ⚠️ Excessive strain when using 1.67-ton shear (vertical positioning) ⚠️ Limited lifting capacity for heavier attachments ⚠️ Premature wear on standard Q355B structure   Engineering Solution Redesigned 19m High-Reach Demolition Boom Parameter Original Design Upgraded Version Length 22m 19m Material Full Q355B Q690D (upper/lower) + Q355B (side plates) Arm Weight 4,445kg (boom) Optimized distribution Cylinders Standard Reinforced Ø220mm Max Attachment 1.67t 2.5t (rotation shear/grapple)     Key Improvements: ✔ 19% shorter length for better load management ✔ Q690D steel in critical stress areas (yield strength ↑40%) ✔ Custom hydraulic circuits for smoother operation Technical Breakdown Structural Enhancements Boom/Stick: Upper/Lower Plates: 25mm Q690D Side Walls: 20mm Q355B Pivot Points: 80mm diameter pins (from 65mm) Bronze bushings with grease channels   Hydraulic System New Cylinders: Bore: 220mm (original 200mm) Pressure rating: 350bar Revised Valve Settings: 15% slower extension speed Pressure relief at 280bar Performance Gain: ▸ 2.5-ton shear operation now stable at full extension ▸ Expected service life extended by 60%   Why This Matters for Your Project Lessons Learned Shear Weight vs. Reach: Every 1-ton attachment weight ↓ recommended length by 3m Material Selection: Q690D adds 15% cost but ↑ lifespan 2X in demolition Cylinder Sizing Rule: Minimum 220mm bore for 2.5t+ attachments Pro Tip: Request our free load calculator to simulate your configuration   Expert Support:   Kaiping Zhonghe Machinery Manufacturing Co.,LTD. Whatsapp: wa.me/+8618127591702

14Meters telescopic arm is installed and use in Hongkong   our telescopic arm have advantage as below: * 12-ton strong bucket cylinder * The reel adopts enlarged spring piece * Bearing part with multi-layer reinforced * The box is made of LG700 high strength material * The pivot end is reinforced with multiple layers to withstand greater excavation forces     2025/07/02 a Hongkong client place order for 1set telescopic arm from us .  after 30days we complete produce on time and delivery.  client is very satisfied after recieved it and feedback us the installed telescopic picture as below.     We specialized in manufacturing various excavator long arms, demolition arms, sliding arms, telescopic arms, rock arms, clamshell buckets, grab, etc.   Kaiping Zhonghe Machinery Manufacturing Co.,LTD. Whatsapp: wa.me/+8618127591702