The inceasing environmental concerns and depletion of fossil fuel reserves have necessitated the search for sustainable and eco-friendly alternative biolubricants. This study focus on the production and characterisation of biolubricant produced from Sesbania herbacea seed oil using homogeneous catalyst. The process of converting Sesbania herbacea seed oil into biolubricant is being studied in this work. Oil extraction by Soxhlet method yielded 20.0%, and the oil exhibited suitable properties for tranesterification, including low acid value (2.70 mgKOH/g) and free fatty content (1.35 mmol/L). Biolubricant production was achieved via double transesterification, involving initial biodiesel production followed by double transesterification with trimethyolpropane (TMP). The targeted Biolubricant was produced under reflux at various reaction conditions, and it was then characterized using FT-IR and GC-MS. The biolubricant's physicochemical properties were examined using techniques approved by the American Society for Testing and Materials (ASTM). The analysis of parameters like Kinematic viscosity (51.20), cloud point (2.90), pour point (-9.80), density (0.90) and viscosity index (180) of the Biolubricant revealed results were in line with the ASTM standards for lubricant.