| 摘要 |
A multi-disc brake (30,60) includes a piston housing (32,62) and attached torque tube (34,64) located about an axle (67,97). Axially adjacent the piston housing (32,62) is a brake actuator (40,70). In one embodiment, the piston housing (32) is located axially between an actuator member (59A) of the brake actuator (40) and a thrust sleeve (20) located about the axle sleeve (19) and abutting a wheel sleeve (16) engaging a wheel bearing assembly (12). In another embodiment, the actuator member (89A) can extend to engage a stationary portion (91) of the axle (97). Hydraulic actuation of the brake actuator (40,70) displaces axially the actuator member (59A,89A) against either a bushing (35) of the piston housing (32) or the stationary portion (91) of the axle (97) such that at least one of the piston housing (32,62) and torque tube (34,64) are compressed operatively in the axial direction by the brake actuator, thereby reducing torsional vibrational movement of the piston housing (32,62) and torque tube (34,64) about the axle (67,97).
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