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A gearbox housing assembly includes a first plate constructed of a rigid material and defining a first plane. A second plate of the gearbox housing assembly defines a second plane parallel to and spaced from the first plane. The second plate is constructed of a rigid material. A plurality of connect

A gearbox housing assembly includes a first plate constructed of a rigid material and defining a first plane. A second plate of the gearbox housing assembly defines a second plane parallel to and spaced from the first plane. The second plate is constructed of a rigid material. A plurality of connectors couples the first plate and the second plate, with an interior space being defined between the first plate and the second plate. A mounting member is coupled to the second plate and has a mounting portion extending away from the interior space. The mounting member is distinct from the second plate to facilitate interchangeability of the mounting member.

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1. A gearbox housing assembly comprising: a first plate constructed of a rigid material and defining a first plane;a second plate defining a second plane parallel to and spaced from the first plane, the second plate being constructed of a rigid material;a plurality of connectors coupling the first p

1. A gearbox housing assembly comprising: a first plate constructed of a rigid material and defining a first plane;a second plate defining a second plane parallel to and spaced from the first plane, the second plate being constructed of a rigid material;a plurality of connectors coupling the first plate and the second plate, an interior space being defined between the first plate and the second plate, within a periphery of the first plate and a periphery of the second plate;a mounting member coupled to the second plate and having at least one mounting portion extending outside the interior space, the mounting member being distinct from the second plate to facilitate interchangeability of the mounting member; andat least one cover member substantially enclosing the interior space, the at least one cover member being constructed of a material substantially lighter than a material of the first and second plates, the at least one cover member being coupled to the first and second plates around the peripheries of the first and second plates such that a force applied to the first plate in a direction substantially normal to the first plane is transmitted through the first and second plates and the plurality of connectors to the mounting member without being applied to the at least one cover member. 2. The gearbox housing assembly of claim 1, wherein the at least one cover member defines a pair of cover members that cooperate to substantially enclose the interior space. 3. The gearbox housing assembly of claim 1, wherein the at least one cover member includes an attachment portion for mating with an input drive source. 4. The gearbox housing assembly of claim 3, wherein the input drive source defines an axis of rotation that is parallel to the first and second planes defined by the first and second plates. 5. The gearbox housing assembly of claim 1, wherein the first plate includes an aperture configured to receive an output member therethrough. 6. The gearbox housing assembly of claim 5, wherein the mounting member includes a body portion positioned within the interior space and configured to transmit a compressive force present on the output member directly from the output member to the mounting portion of the mounting member without applying a substantial portion of the compressive force to the at least one cover member. 7. The gearbox housing assembly of claim 1, wherein the mounting member is U-shaped and includes the at least one mounting portion defining a pair of mounting portions. 8. A modular gearbox assembly comprising: a first plate defining a first plane;a second plate defining a second plane parallel to and spaced from the first plane, the first plate and the second plate being rigidly coupled together, thereby defining an assembled frame structure;a cross-axis gear set positioned at least partially in an interior space defined between the first plate and the second plate and within a periphery of the first plate and a periphery of the second plate;a mounting member coupled to one of the first plate and the second plate, the mounting member having at least one mounting flange extending outside the interior space; andat least one cover member being non-destructibly removable from the assembled frame structure without disassembling the frame structure. 9. The modular gearbox assembly of claim 8, wherein the first plate, the second plate, and the mounting member are configured to provide structural rigidity of the modular gearbox assembly substantially independently of the strength of the at least one cover member. 10. The modular gearbox assembly of claim 8, wherein the first and second plates are constructed of a first material and the at least one cover member is constructed of a second material different than the first material, the second material being substantially lighter and less structurally rigid than the first material. 11. The modular gearbox assembly of claim 10, wherein the first material is metallic, and the second material is plastic. 12. The modular gearbox assembly of claim 8, wherein a first gear of the cross-axis gear set is coupled to an input drive source defining an axis parallel to the first and second planes, and a second gear of the cross-axis gear set is coupled to a rotatable output member, which extends through the first plate. 13. The modular gearbox assembly of claim 12, wherein a compressive force on the output member is transmitted directly to the mounting member without transferring a substantial portion of the compressive force to the at least one cover member. 14. The modular gearbox assembly of claim 8, wherein the at least one cover member is coupled to the first and second plates such that a force applied to either of the first plate and the second plate in a direction substantially normal to the first and second planes is transmitted through the first and second plates to the mounting member without being applied to the at least one cover member. 15. The modular gearbox assembly of claim 8, wherein the mounting member is distinct from both the first and the second plate, the mounting member being coupled to one of the first plate and the second plate to facilitate interchangeability of the mounting member. 16. The modular gearbox assembly of claim 8, wherein the at least one cover member lies outside and against at least one peripheral edge of the first plate and lies outside and against at least one peripheral edge of the second plate.