Drive module for a powertrain test bench

Abstract

The invention relates to a drive module (100) for a powertrain test bench, wherein the drive module (100) comprises an electric motor (10) and a base frame (20), wherein the electric motor (10) has a sleeve-like housing (13) with a front bearing plate (11) and a rear bearing plate (12) and the housing (13) is subject to temperature-dependent linear expansion, wherein the front bearing plate (11) is held in the base frame (20).The drive module (100) according to the invention is characterized in that the rear bearing shield (12) is axially movable in the base frame (20) by means of a compensating element (30) designed as a ball bushing, that the ball bushing has an inner running surface (31), an outer running surface (32) and balls (33) arranged between them, that the inner running surface (31) is arranged non-rotatably on the electric motor (10), that the outer running surface (32) is arranged non-rotatably on the base frame (20), and that the inner running surface (31) is held non-rotatably relative to the outer running surface (32). The invention further relates to a corresponding drive train test bench.

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