A bearing assembly comprising: a first gear shaft aligned with a first axis; a second gear shaft aligned with a second axis, the second axis being oriented parallel to the first axis; a first bearing supported on the first gear shaft; a second bearing supported on the second gear shaft; and a coupling mechanism extending between and radially clamping the first bearing to the second bearing, wherein the coupling mechanism is operable to restrict relative radial movement between the first bearing and the second bearing; wherein the coupling mechanism further comprises: a first portion mounted to the first bearing and protruding radially outwardly from the first bearing towards the second bearing; and a second portion located at the second bearing, the second portion being configured to receive the first portion; wherein the first portion includes a key and the second portion includes a plate having a keyhole formed therein, the key being receivable within the keyhole; and characterized in that: the key has a body and a radial flange arranged near an end of the body, and the keyhole has a non-uniform configuration extending between a first end and a second end thereof, the flange being receivable within the first end of the keyhole but not the second end of the keyhole. a first gear shaft aligned with a first axis; a second gear shaft aligned with a second axis, the second axis being oriented parallel to the first axis; a first bearing supported on the first gear shaft; a second bearing supported on the second gear shaft; and a coupling mechanism extending between and radially clamping the first bearing to the second bearing, wherein the coupling mechanism is operable to restrict relative radial movement between the first bearing and the second bearing; wherein the coupling mechanism further comprises: a first portion mounted to the first bearing and protruding radially outwardly from the first bearing towards the second bearing; and a second portion located at the second bearing, the second portion being configured to receive the first portion; wherein the first portion includes a key and the second portion includes a plate having a keyhole formed therein, the key being receivable within the keyhole; and characterized in that: the key has a body and a radial flange arranged near an end of the body, and the keyhole has a non-uniform configuration extending between a first end and a second end thereof, the flange being receivable within the first end of the keyhole but not the second end of the keyhole. a first portion mounted to the first bearing and protruding radially outwardly from the first bearing towards the second bearing; and a second portion located at the second bearing, the second portion being configured to receive the first portion; wherein the first portion includes a key and the second portion includes a plate having a keyhole formed therein, the key being receivable within the keyhole; and characterized in that: the key has a body and a radial flange arranged near an end of the body, and the keyhole has a non-uniform configuration extending between a first end and a second end thereof, the flange being receivable within the first end of the keyhole but not the second end of the keyhole.