An elastomeric joint for connecting carrier units, the joint comprising: a joint housing comprising a head portion on a first side comprising an annular flange, wherein the annular flange is comprised of interior walls (215, 217, 224) that define a hole and a counter bore therethrough; and an elastomeric insert positioned inside the counter bore of the annular flange wherein the elastomeric insert comprises a ring having an inside wall that defines a channel extending therethrough, wherein the channel is configured to fit around the tubular portion of a bearing; the bearing comprising a base portion and a tubular portion extending from the base portion, wherein the bearing is configured to be positioned inside the counter bore of the annular flange and the elastomeric insert is configured to fit around the tubular portion of the bearing; wherein the joint housing comprises an elongated body on a second side, wherein the elongated body comprises a bore extending longitudinally therethrough and orthogonally to the axis of the hole and the counter bore characterized in that the elastomeric insert further comprises a front side, a rear side, and lateral sides, such that the thickness of the elastomeric insert between the inside wall and an outer surface of the elastomeric insert is greater in a region defining the lateral sides than in regions comprising the front side and the rear side; wherein an outer surface of the elastomeric ring is curved on the lateral sides and comprises a flat portion and a curved section near a middle of the front side and the rear side; wherein the lateral sides of the elastomeric insert are positioned against side walls of the counter bore, and wherein the front side and the rear side are spaced apart, respectively, from a front inside wall and a rear inside wall of the counter bore; wherein gaps are formed between the front and rear sides (226, 227) of the elastomeric insert and front and rear interior walls (215, 217) of the counter bore. a joint housing comprising a head portion on a first side comprising an annular flange, wherein the annular flange is comprised of interior walls (215, 217, 224) that define a hole and a counter bore therethrough; and an elastomeric insert positioned inside the counter bore of the annular flange wherein the elastomeric insert comprises a ring having an inside wall that defines a channel extending therethrough, wherein the channel is configured to fit around the tubular portion of a bearing; the bearing comprising a base portion and a tubular portion extending from the base portion, wherein the bearing is configured to be positioned inside the counter bore of the annular flange and the elastomeric insert is configured to fit around the tubular portion of the bearing; wherein the joint housing comprises an elongated body on a second side, wherein the elongated body comprises a bore extending longitudinally therethrough and orthogonally to the axis of the hole and the counter bore characterized in that the elastomeric insert further comprises a front side, a rear side, and lateral sides, such that the thickness of the elastomeric insert between the inside wall and an outer surface of the elastomeric insert is greater in a region defining the lateral sides than in regions comprising the front side and the rear side; wherein an outer surface of the elastomeric ring is curved on the lateral sides and comprises a flat portion and a curved section near a middle of the front side and the rear side; wherein the lateral sides of the elastomeric insert are positioned against side walls of the counter bore, and wherein the front side and the rear side are spaced apart, respectively, from a front inside wall and a rear inside wall of the counter bore; wherein gaps are formed between the front and rear sides (226, 227) of the elastomeric insert and front and rear interior walls (215, 217) of the counter bore.