The invention discloses a uniwafer three-disk magnetic rheological 
clutch which comprises a 
drive shaft (1), a driven shaft (2), a drive disk (11), a 
magnet exciting coil (4), a 
magneto rheological left disk channel (9), a 
magneto rheological right disk channel (8), a 
magneto rheological circular channel (7), a left shell (14), a left driven member (15), a right shell (17), a right driven member (16), a drive disk 
magnetism-isolating 
copper ring (10), a driven member 
magnetism-isolating 
copper ring (5), an angle contact 
ball bearing (3), a thrust 
ball bearing (12), a 
magneto rheological liquid (20) and a sealing device, wherein the drive disk (11) is positioned in a cavity surrounded by the left driven member (15), the right driven member (16) and a driven connecting member (6), and the 
magneto rheological liquid is filled in the cavity; and magnetic fields vertical to three disk surfaces of the drive disk (11) pass through the same, which can more effectively develop 
magneto rheological effect. The invention overcomes the defects of 
slow response, easy abrasion, large 
noise, more 
heat generation, unstable control and the like of the traditional 
clutch, and has the advantages of smaller volume, bigger drive torque, simpler structural design and less 
power consumption compared with the traditional magneto rheological 
clutch.