Home > Pot Bearing

There are three types of Pot Bearing, fixed, guided and free movable. Rubber pad which is the key component of Pot Bearing is completely enclosed in a steel pot. Under high pressure the pad loses it is stiffness and allows tilting movement around any horizontal axis due to its capacity to deform. Protected from squeezed out from base pot by seal rings the rubber pad can take huge loads because of it is non-compression. PTFE which is stable and has a low friction factor (≦0.03) form a excellent sliding surface with stainless steel for movable bearing. Each bearing has a dust-protecting device to protect rubber pad and PTFE.

With Nippon Pillar’s 80-year experience in bearing industry. Taiwan Pillar has produced more than 10000 set of pot bearings over a decade, and is experienced and qualified for all project.

Design type(RC Bridge、 PC Bridge、Steel Structure Bridge )

  • Free Movable Bearing (with Hold Down Device)
  • Guided Bearing (with Hold Down Device )
  • Fixed Bearing (with Hold Down Device)
  • Design Standard :
    AASHTO 1996
    prEN1337 (Europe Pot Bearing Standard,Taiwan high-speed railroad’s main design depended)、BS5400 (England Pot Bearing Standard)

Pot Bearing Characteristic:

  • Simulate roller and hinge perfectly, and low rotation stiffness.
  • Lightweight and take extreme vertical and horizontal load.
  • Exchanging can be done within uplifting the bridge 10mm.
  • Easy exchanging, observation and maintenance.
  • Large horizontal movement with the low friction factor of PTFE.
  • Low thickness.
  • Long life-cycle and economic.

Fixed Bearing

Guided Bearing

Free Movable Bearing

Simulate Hinge:
Fixed Bearing can accommodate vertical and horizontal load, and don’t move in any direction.

Simulate Roller:
Guided Bearing can accommodate vertical and transverse horizontal load, and move along the longitudinal direction.

Simulate Roller:
Free Movable Bearing can only accommodate vertical load. it doesn’t bear any horizontal load and it can move free.

Special Type:
For cases that bridges suffer uplift forces, anti-uplift Pot Bearing can be applied. Hold down devices is used to prevent Bearings from separation in those cases. When the bridge using for Incremental Launching Method or Advanced Shoring Bridge Construction, Pot Bearing can also apply as wedge plate with proper slope.

High quality corroding
Bearing check after test Pot Bearing fabrication Bearing on concrete
高品質之表面防蝕處理 試驗後支承檢視 盤式支承安裝實景 Bearing on concrete superstructure
Bearing on steel structure
Excellent quality
Quality control strictly Pot Bearing of No.3 freeway
支承應用於鋼構橋樑 優良之品質管理 嚴格之品質控管 南二高盤式支承

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