YD21-017/018 Air Trolley Jacks: 2/3-Stage, 15-20T for Truck/Bus Fast Lifting

Name: YD21-017/018 Air Trolley Jacks: 2/3-Stage, 15-20T for Truck/Bus Fast Lifting
Brand: Jiaxing Yeeda International Co.,Ltd

Price Negotiable

Price: Negotiable

MOQ: 50pcs

Delivery Time: 30-45DAYS

Brand: YEEDA

Product Description

YD21-017/018 Air Trolley Jacks: 2/3-Stage, 15-20T for Truck/Bus Fast Lifting

Product Specifications

Series Basic Information & Core Common Configurations

Common Parameters	Specific Description
Product Type	Telescopic air trolley jacks, including two models: YD21-017 (Two Stages Telescopic) and YD21-018 (Three Stages Telescopic). Specially designed for the maintenance of heavy-duty vehicles such as trucks and buses.
Core Common Configurations	Air-Hydraulic Dual-Action Performance: Fast air-driven lifting under no load (speed ≥50mm/s) and stable hydraulic load-bearing under load. Self-Retracting Function: Ram retracts automatically by air control, saving 10 minutes of reset time per operation. Heavy-Duty Rubber Wheels: 4 large-size rubber wheels (diameter ≥120mm) for easy movement. Long T-Handle Positioning Design: 800mm handle allows remote adjustment without bending. Safety Compliance: Complies with ANSI/ASME PALD 2009 standards with overload protection.
Common Applicable Scenarios	Covers chassis maintenance, tire replacement, transmission system inspection, and frame adjustment of trucks and buses.

Key Parameter Comparison Between Models

Model	Telescopic Stages	Rated Load	Min. Height (mm)	Max. Height (mm)	Power Mode	Operating Force	Weight (KG)	Core Adaptable Scenarios
YD21-017	Two Stages	15T	180	650	Air + Hydraulic	≤50N	85/90	Maintenance of light trucks and minibuses
YD21-018	Three Stages	20T	160	800	Air + Hydraulic	≤50N	110/115	Maintenance of heavy-duty trucks and coaches

Product Details

Multi-Stage Telescoping + Air-Hydraulic Dual-Action

Fast Positioning Under No Load: YD21-017 lifts to 300mm in 8 seconds; YD21-018 lifts to 350mm in 10 seconds.
Stable Output Under Load: Hydraulic system maintains 15-20mm/s lifting speed under rated load.
Height Range Coverage: YD21-017 (180-650mm); YD21-018 (160-800mm) for full range of vehicle maintenance needs.

Long-Handle Positioning + Rubber Wheels

800mm T-handle allows remote positioning from 1 meter away.
4 large rubber wheels with brake function for easy movement and stability.

Self-Retracting + Compliant Structure

Air-driven self-retracting: YD21-017 retracts in 12 seconds; YD21-018 in 15 seconds.
16mm thick cold-rolled steel construction with reinforced stress points.
ANSI/ASME PALD 2009 compliant safety features including overload protection.

Application Scenarios

Light Truck Tire Replacement (YD21-017)

Replace front tire of JMC Kaiyun light truck (4.5T).
Lift to 300mm in 8 seconds, complete operation in 25 minutes.
37.5% more efficient than traditional manual jacks.

Minibus Chassis Inspection (YD21-017)

Inspect transmission system of Yutong T7 minibus (6.8T).
Lift to 650mm maximum height for 50cm operating space.
50% more efficient than traditional tools.

Heavy-Duty Truck Maintenance (YD21-018)

Maintain transmission system of FAW J7 heavy-duty truck (12T).
Three-stage telescoping to 800mm maximum height.
43% time savings compared to traditional tools.

Coach Frame Adjustment (YD21-018)

Adjust frame of King Long XMQ6129 coach (15T).
800mm high stroke meets frame adjustment needs.
80% improvement in adjustment accuracy.

Frequently Asked Questions

Q1: Can the YD21-018 (20T) maintain a 22T heavy-duty truck?

Not recommended. The overload protection will trigger at 22T, which is the safety upper limit. Forced operation will reduce equipment lifespan and require more frequent maintenance.

Q2: No response to air-driven lifting - how to troubleshoot?