A Series
Wrap-fit Urethane Element Coupling
John Crane’s Powerstream® A Series coupling provides a solution to one of the most persistent and troublesome problems facing maintenance personnel, as well as the periodic coupling failure and the downtime and expenses that go with it. If a new insert is needed, a replacement A Series insert can be installed in under a minute without moving either the prime mover or the driven equipment. Watch the video for to learn more: Click here to watch video
Unlike tire couplings that will add axial loading on your equipment bearings as the equipment runs at higher speed, the A Series design allows you to easily replace the insert without moving either piece of equipment.
The A Series design is compact and fully conforms with ATEX, ANSI and ISO requirements. The design can be supplied in close coupled, spacer and dual spacer versions to cover your equipment needs. The close coupled hubs and spacers have six or eight teeth on one end. The spacer shaft hubs are all made using high grade carbon steel. The split insert, which is made of specially compounded urethane, fits over the hub / spacer teeth. The retaining ring is made of steel and is located with two setscrews. Bolts are supplied with the spacer shaft hubs and a specially formed thread is used in the spacer piece to lock and retain bolts in place during operation without the need for any other locking mechanism.
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Parameters
- Maximum Rating
- A**C: Standard Insert 1,804 kW/1000 rpm or 242 HP/100 rpm
High Torque Insert 2,194 kW/1000 rpm or 294 HP/100 rpm
A**S: Standard Insert 482 kW/1000 rpm or 65 HP/100 rpm
High Torque Insert 654 kW/1000 rpm or 88 HP/100 rpm - Maximum Continuous Torque
- A**C: Standard Insert 17,230 Nm or 152,500 lb. in.
High Torque Insert 20,936 Nm or 185,300 lb. in.
A**S: Standard Insert 4598 Nm or 40,700 lb. in.
High Torque Insert 6248 Nm or 55,300 lb. in. - Maximum Speed
- A**C: 1,600 to 9,600 rpm
A**S: 2,200 to 7,800 rpm - Maximum Bore (Shaft)
- A**C: 7.5" or 197mm
A**S: Spacer Hub 6.4375" or 165mm Close Coupled Hub 5.375" or 142mm - Temperature Limits
- Standard insert: -40°F to 180°F/-40°C to 80°C
High-temperature inserts: 300°F/150°C
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