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Stop the lid at any angle, safety operation.
'Free Stop' type balancer has the following features compared with 'Spring Assisted' type.
It can hold the lid at any open angle within wide angle range. ( free stop )
It can reduce lateral gap of the lid because of improving the cross direction strength.
It has the waterproof spring cases.
The installation method and adjustment method of this product are the same as 'Spring Assisted' type products.
*When the center of gravity position of the lid is high, the angle range of enabling to hold the lid may become small.
*For the 'Free Stop' type, please calculate the torque of the lid more accurately.
The heavy lid can be opened and closed easily and safely.
Please select the appropriate model from the FM type, FL type, BG type, BX type according to the torque of the lid.
The Cap Balancer can be used for an open top cover or lid. It can not be used when it is inclined more than 45 degrees. (Even if the inclined angle is small, it may not be used depending on the condition.)
In order to safely open and close heavy covers and lids with a small force, it is important to select a type of Cap Balancer that is suitable for the equipment to be mounted. Please check the following points during selection.
Whether to stop the cover or the lid at an arbitrary angle
How is the usage environment
Calculation of torque of cover and lid
Handy Lock System is the locking mechanism without bolts or clamps. You can tighten or release the lid just by turning the handle. Combining a Handy Lock System with a Cap Balancer makes it possible to quickly open and close the manhole.
For mounting the Cap Balancer, the upper hinge is attached to the monhole cover (lid) flange, and the lower hinge is attached to the manhole body flange, the manhole neck.
Line up of Cap Balancer is consists of 'Spring assisted type' and 'Free stop type'.
Rich line up of Cap Balancer is covering from light weight lids to over 200kg heavry lids.
For model selection, please refer to the "Installation method" and "Selection method" page, or feel free to inquire.