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New Finger Joint A-Type (NFJ-A)
NFJ-A_WM.wmv
 






NFJ A Type is now showing its excellent performance being installed on major bridges or high ways, and its use is increasing in repair construction and establishment construction.




NFJ A Type has improved the weak points of welding of the existing goods by processing H-BEAM, and it has semi-permanent lifespan for wheel impact and abradability (Patent No. 0309450)







Simple structure, so installation is also very easy, and cut manufacture and installation make it possible speedy installation and economical maintenance.







- It uses synthetic rubber, so it has high ozone resistance, cold resistance, durability, and it is produced by using high pressure press in exclusive mold for each standard, so it has high reliability of waterproof and with adoption of compression vulcanization method, the adhesiveness and quality are very excellent.

- Specially manufactured waterproof coupling is applied between cut manufactured products and by using connection reinforcement, firmer waterproof is made.

- Drainage coupling at each end of expansion joint makes drainage function excellent.

- The waterproof coupling absorbs the shocks and impacts of expansion joint occurring when vehicles pass, so it does not convey the shock to the whole section of bridge.








- NFJ-A Type is the structure to make the discontinuous department least, which has very good flatness, whose top of finger has tapered processing in order to raise flatness and cushioning even in case of unexpected unequal sinking or bridge turning caused by shearing etc., and whose end has rubber in order to absorb the shock.

- Bolt type setting device is applied for easy pre-setting even at the field, and the flatness can also be improved.






























(Unit : mm)
MODEL NO. Expansion
Amount
Structural Space A B C H Reinforcing
Rod Amount
CON'C
Min Mid Max
NFJ-50A 50 25 50 75 185 200 330 150 10.25kg 0.099§³
NFJ-70A 70 35 70 105 210 200 330 150 10.25kg 0.099§³
NFJ-80A 80 40 80 120 220 200 380 150 10.25kg 0.114§³
NFJ-100A 100 50 100 150 250 200 380 200 18.48kg 0.152§³
NFJ-120A 120 65 130 195 335 250 380 200 18.48kg 0.152§³
NFJ-150A 150 75 150 225 400 250 380 200 18.48kg 0.152§³
* 1. The above dimensions are standard dimensions. They are subject to change depending on the site conditions.
  2. A drainage coupling is installed in areas with a small vertical gradient to facilitate water drainage.
  3. To prevent leakage in the joint of the device, a water coupling is installed and sealed with a C-shaped bolt.
     
  4. To improve durability, NEW F/J NO. 1630 uses a reinforced stiffener inside the product.
  5. Regarding the intervals for product installation, ask our engineering team.