Before revision: Standard sizes Source:Mahadevan K and Reddy K.Balaveera, (2015), 'Design data hand book', CBS publishers and Distributors (P) ltd., New-Delhi, Machine shafts Up to 25 mm steps of 0.5 mm Transmission shafts 25 mm to 60 mm with 5 mm steps 60 mm to 110 mm with 10 mm steps 110 mm to 140 mm with 15 mm steps 140 mm to 500 mm with 20 mm steps The standard lengths of the shafts are 5 m, 6 m and 7 m.
After revision: Usually 1m to 2m is used.Standard sizes Source:Mahadevan K and Reddy K.Balaveera, (2015), 'Design data hand book', CBS publishers and Distributors (P) ltd., New-Delhi, Machine shafts Up to 25 mm steps of 0.5 mm Transmission shafts 25 mm to 60 mm with 5 mm steps 60 mm to 110 mm with 10 mm steps 110 mm to 140 mm with 15 mm steps 140 mm to 500 mm with 20 mm steps The standard lengths of the shafts are 5 m, 6 m and 7 m.