Canadarm and Canadarm2 - Comparative table

  Canadarm Canadarm2
Location Installed on each shuttle and returns to Earth. Only one installed on the International Space Station and stays permanently in space.
Range of Motion Reach limited to length of arm. Moves end-over-end to reach many parts of International Space Station limited only by number of Power Data Grapple Fixtures on the Station (PDGF). PDGFs located around the Station provide power, data and video to the arm through its Latching End Effectors (LEE). The arm can also travel the entire length of the Space Station on the Mobile Base System.
Fixed joint Fixed to the shuttle by one end. No fixed end. Equipped with LEEs at each end.
Degrees of freedom 6 degrees of freedom. Similar to a human arm: shoulder (2 joints), elbow (1 joint), and wrist (3 joints). 7 degrees of freedom. Much like a human arm: shoulder (3 joints), elbow (1 joint), wrist (3 joints). However Canadarm2 can change configuration without moving its hands.
Joint rotation Limited elbow rotation (to 160 degrees). Full joint rotation. Joints (7) rotate 540 degrees. Larger range of motion than a human arm.
Senses No sense of touch Force & Moment Sensors provide a sense of "touch." Automatic vision feature for capturing free-flying payloads. Automatic collision avoidance.
Length 15 metres 17 metres
Weight 410 kg 1,641 kg
Diameter 33 cm (Ext. Diameter of Composite Boom) 35 cm (Ext. Diameter of Composite Boom)
Speed of Operations Unloaded: 60 cm/sec
Loaded: 6 cm/sec
Unloaded: 37 cm/sec
Loaded: 2 cm/sec Station assembly 2 cm/sec.; EVA support: 15 cm/sec.; Orbiter: 1.2 cm/sec
Composition 16 plies of high modulus carbon fibre-epoxy 19 plies of high strength carbon fibre–thermoplastic
Repairs Repaired on Earth. Designed to be repaired in space with ORUs (Orbital Replacement Units). Built-in redundancy.
Control Autonomous operation or astronaut control Autonomous operation or astronaut control
Cameras 2 (one on the elbow and one on the wrist) 4 colour cameras (one at each side of the elbow the other two on the LEEs)