Size (CM)：28.5*18.5*14 

Weight (KG)：3 

Brand
JUNXUN

Overview
The 856A2992G01 is a high-performance, precision-engineered LPT Coupling Nut and Tensioner Adapter custom-designed for the rigorous assembly, rigging, 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 controlled application of high-precision torque or hydraulic tension to the low-pressure turbine (LPT) coupling nut. Manufactured by JUNXUN to comply with strict CFM International maintenance manual torque-specification standards, the 856A2992G01 provides a rigid, non-slip interface that ensures uniform load distribution across the coupling threads, preventing thread galling, binding, or structural fatigue during high-load engine operation.

Key Points
Precision-Mated Drive Interface: Custom-machined with exact internal/external splines or hex-drive profiles to fit the proprietary geometry of the CFM56 LPT coupling nut, ensuring zero-slip force application.

High-Force Tensioning Compatibility: Engineered to integrate seamlessly with standard industrial hydraulic tensioners and torque-multiplication GSE, allowing for repeatable, factory-spec pre-load application.

Aerospace-Grade Tensile Metallurgy: Fabricated from premium, heat-treated high-tensile alloy steel certified to withstand intensive mechanical loads without thread stripping or deformation.

Non-Marring Contact Architecture: Outfitted with passivated contact shoulders that protect the highly polished coupling nut and surrounding engine casing surfaces from tool-induced scratching or structural scarring.

Applications
LPT Rotor Assembly MRO: Deployed by certified engine technicians during module build-up or rotor-stacking operations to ensure the LPT coupling is secured to exact geometric benchmarks.

Propulsion System Overhaul: Utilized within specialized repair cells for the safe loosening and re-tightening of LPT coupling hardware during scheduled C-checks and D-checks.

Airlines Fleet Tool Crib Logistics: Essential specialized GSE hardware for commercial airlines and third-party MRO facilities servicing CFM56 fleets to ensure zero-defect engine assembly and high dispatch reliability.

856A2992G01 is a precision-engineered core component for critical aviation ground support equipment (GSE) and professional aircraft maintenance rig systems, compatible with global mainstream commercial narrow-body, wide-body and regional aircraft fleets. Manufactured in strict compliance with AS9100D aerospace quality standards and FAA/EASA safety protocols, it is precision-machined from high-strength corrosion-resistant aerospace-grade alloy with a rugged wear-proof and anti-fatigue surface finish, optimized to endure harsh airfield operational conditions including continuous structural vibration, heavy mechanical impact, extreme temperature fluctuations and chemical exposure from aviation fluids like hydraulic oil and jet fuel. It features ultra-tight application-specific dimensional tolerances and industry-standard mounting interfaces for seamless drop-in integration into GSE and maintenance rig assemblies, delivering exceptional structural stability and long-term wear resistance to effectively enhance the operational reliability, load-bearing capacity and service life of ground support equipment for worldwide aircraft MRO and on-tarmac ground support operations.