Flexible Couplings (PM)

	Heavy duty steel coupling for torques up to 6000 KNm.

	The Standard Range comprises • Shaft to shaft • Flang to shaft • Mill motor coupling • Brake drum coupling

	Applications • Metal manufacture • Mining and mineral processing • Pumps • Fans • Compressors • Cranes and hoists • Pulp and paper industry • General heavy duty industrial applications

Features	Benefits
• Severe shock load protection	• Giving protection and avoiding failure of the driveline under high transient torques.
• Intrinsically fail safe	• Ensuring continuous operation of the driveline in the unlikely event of rubber failure or damage.
• Maintenance free	• With no lubrication or adjustment required resulting in low running costs.
• Vibration control	• Achieving low vibratory loads in the driveline components by selection of optimum stiffness characteristics.
• Zero backlash	• Eliminating torque amplifications through precompression of the rubber elements.
• Misalignment capability	• Allows axial and radial misalignment between the driving and driven machines.
• Low cost	• The PM Coupling gives the lowest lifetime cost.

Construction details

• PM Couplings up to and including PM600 are manufactured in steel. Driving flanges up to and including PM60 are   steel forgings to BS970 grade 070 M55. Driving Flanges PM90 to PM600 and all inner and outer members up to   PM600 are steel casting to BS3100 grade A4.
• PM Couplings above PM900 are supplied in spheroidal graphite to BS2789 grade 420/12 unless otherwise   specified.
• Separate rubber elements with a choice of grade and hardness, styrene butadiene with 60 shore hardness   (SM60)   being the standard.
• Rubber elements loaded in compression.
• Rubber elements are totally enclosed.

PM Coupling Typical Applications :

	.
PM130 Spacer coupling on an IHI turbo compressor in Japan.		PM40 coupling on a Peter Brotherhood steam turbine generator.

PM0.7 brake drum coupling and a PM0.7 spacer coupling on a John Henderson coal charging car at BSC Dawes v Lane.		PM18 and PM27 coupling on a Hallden-Robertson type 56 flying sheer in Portugal.


PM40 spacer coupling, PM40 LEF coupling and PM40 cardan shaft couplings on electric motor driven Sulzer pumps in Egypt.		2 off PM600 on a nickel grinding mill at Leinster in Western Australia.

Click to more		PM Shaft to Shaft PM 0.4 to PM 130

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