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.