Size (CM)：104*104*27

Weight (KG)：34

Brand

JUNXUN

Overview

The 856A2985G01 is a high-performance, master-grade Booster and Low-Pressure Turbine (LPT) Shaft Drive Adapter custom-engineered for the rigorous maintenance, modular repair, and overhaul (MRO) of CFM56 series turbofan engines. Classified as a flight-critical powerplant handling asset and specialized Ground Support Equipment (GSE), this adapter is purpose-built to facilitate the secure, perfectly aligned coupling of the engine’s internal rotor shafts to external diagnostic and testing instrumentation. Manufactured by JUNXUN to comply with strict CFM International maintenance manual interface dimensions, the 856A2985G01 provides an absolute, rigid mechanical link that ensures stable rotation and precise data acquisition during engine build-up, rotor balance checks, and ground-run troubleshooting sequences.

Key Points

Precision-Spline Interface Geometry: Custom-machined to match the specific tooth profiles and pitch of the CFM56 booster/LPT rotor shafts, ensuring zero-play, balanced force transmission.

Rotational Stability & Centering: Engineered to maintain absolute shaft concentricity during manual or automated drive-shaft turning, protecting internal seals and high-speed bearings from side-loading fatigue.

Aerospace-Grade High-Tensile Metallurgy: Fabricated from premium, heat-treated alloy steel certified to withstand the mechanical stress of drive-torque application without deformation or thread stripping.

Non-Marring Contact Surfaces: Outfitted with passivated contact shoulders that protect the highly polished shaft-end surfaces from metal-on-metal friction and scoring during the docking process.

Applications

CFM56 Rotor Stack Overhaul: Deployed by certified engine technicians during module assembly to safely engage and position the LPT/Booster shaft stack.

Engine Troubleshooting & Diagnostic Testing: Utilized within specialized repair cells or on-wing engine maintenance to perform rotor-friction checks and drive-line rotation audits.

Airlines Engine Tool Crib Logistics: Essential specialized GSE hardware for commercial airlines, regional fleet operators, and third-party MRO facilities servicing CFM56 fleets to ensure dispatch reliability and optimal engine performance.