1 50kNm TORQUE STANDARD MACHINE

The paper introduces the working principle of dead-weight balance type 50kNm torque standard machine, which was developed recently. The paper describes in detail the key technique, etc. such as the knife edge supporting technique with high load, the force magnifing technique, the alignment technique and the computer control automatic loading technique, etc. The paper analyses the uncertainty of the machine and the compared and verifyed data with LNE. The uncertainty of the 50kNm torque standard machine arrives at 0.023%(tp=3.1)