Ama-bearings ebhuloho kanye ne-baseplate yizingxenye eziyisisekelo kanye nezingxenye ezibalulekile zebhuloho lensimbi le-Bailey. Ngenxa yokuthi i-Bailey Bridge ihlukaniswe yaba ibhuloho lensimbi le-321 kanye nebhuloho lensimbi le-HD200, ama-bearings ebhuloho kanye ne-baseplate nakho kungahlukaniswa ngohlobo lwe-321 nohlobo lwe-200.
Thayipha i-abutment engu-321: Ikholomu yokugcina yebhuloho isekelwe ku-abutment ye-abutment. I-axle beam ihlukaniswe izingxenye ezintathu. Lapho kumiswa ibhuloho eliwumugqa owodwa, ikholomu yokuphela kwe-truss isekelwa engxenyeni emaphakathi ye-axle beam; lapho kwakhiwa ibhuloho elinemigqa emibili, kusetshenziswa amabhuloho amabili Izihlalo kanye namakholomu okugcina asekelwa ngokulandelana esigabeni esiphakathi semishayo emibili ye-axle ye-abutment. Lapho kumiswa imigqa emithathu yamabhuloho, kusasetshenziswa ama-abutments amabili. Isekelwe ezingxenyeni ezimbili eziseceleni ze-axle yelinye ibhuloho.
Thayipha i-baseplate engu-321: I-baseplate isetshenziselwa ukubeka i-abutment yebhuloho futhi kusatshalaliswe ngokulinganayo umthwalo osuka ku-abutment yebhuloho kusisekelo. Izinombolo 1, 2, kanye no-3 ziqoshwe onqenqemeni lwe-baseplate, ngokulandelana okukhomba indawo yomugqa ophakathi nendawo yebhuloho yomugqa owodwa, umugqa ophindwe kabili, kanye namabhuloho anemigqa emithathu. Ngakolunye uhlangothi lwepuleti lesihlalo liqoshwe indawo yomugqa omaphakathi lapho ibheke khona ibhuloho.
I-200 uhlobo lwebhuloho elithwele, i-baseplate iyafana nohlobo lwe-321, kodwa isakhiwo siwumzimba owodwa, futhi ibhuloho ngalinye eliphethe lihambisana ne-baseplate.