construction machinery twin-shaft concrete mixer: 1.Mixing shafts:The mixing shaft made from smithing alloy steel.They have the best torsion-bent intension. 2.Shaft seeling:The mixing shaft have long life because they are sealed by two reliable face seals and the others unique seal which combinate high pressure grease. we will supply nore information , please contact me. Item JS1500/1000 JS2250/1500 JS3000/2000 JS4500/3000 JS6000/4000 Input capacity 1500 L 2250 L 3000L 4500L 6000L Output capacity 1000L 1500L 2000L 3000L 4000L Power 37kw 2*30kw 2*37kw 2*55kw 2*75kw Weight 5500kg 6500kg 7600kg 9800kg 13000kg Other items Delivery time: 30 days Payment: 30% prepayment by T/T, 70% rest payment by T/T or L/C