Window Cranks
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| Other Names: | |
|---|---|
| Replacement Window Cranks | |
| Description: | |
| Cranks used for the operation of hinged windows. |
Window cranks operate hinged operating windows by cranking the window to open or close its sash.
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Window Cranks
Hinged replacement windows, including casement windows, awning windows, hopper windows and tilt and turn windows operate manually by cranking the window to open or close the sash. The blinds of jalouise windows also operate with a cranking mechanism. Although mechanized operating options are available for replacement hinged windows the hinged window that operates with a manual crank is the most popular option because it is significantly less costly than a mechanized operating window and there are less chances that the window will fail to operate.
Window cranks are available in a wide range of styles, colors and materials.
Window Crank Styles
Window cranks are available as fold-in cranks and non fold-in cranks. Many homeowners prefer fold up crank designs because it prevents possible damage to window treatments and ensures ease of operation.
Window Crank Materials
Window cranks are generally constructed with die cast metal, though the crank casing is often plastic. These metals can be painted to match any interior window design or framing material including wood, vinyl windows, fiberglass, aluminum or composite frames.
Window Size for a Crank Replacement Window
Hinged windows generally crank outward. These windows can’t be too large or too heavy because the crank must support the window during the operating procedure. Smaller and more lightly constructed windows are the best replacement window solution for windows that operate with cranks.
Window Latches
Window cranks operate in conjunction with single-lever latches or tandem latches, making them easy to open and close.
Window Crank Materials
Window cranks may are included as part of the purchase of a hinged replacement window. They are generally styled and colored to match the frame style.
Cranking Mechanism Maintenance
Maintaining the cranking mechanism in a hinged replacement window will add years to the life of the window. The homeowner should conduct a yearly maintenance program for replacement hinged windows.
The windows should be opened fully and a spray lubricant should be applied to oil the crank as well as the hinges and the lock.
The cranking mechanism's cover should be removed and a bit of light grease can be applied to the attached crank as well as to the crank gears. The operating cover can then be replaced.
Replacing a Window Crank
If a homeowner sees that the crank operator has worn or missing splines on the crank stud, broken or stripped gears or a worn-out crank arm, it will be necessary to replace the entire crank operator. This often is the case when the crank handle spins loosely as it's turned or doesn't pull the sash far enough inward to successfully engage the locking mechanism.
If the window's overall condition is good, it is preferable to replace the crank over replacing the entire window sash. The crank handle can be replaced if only the teeth are missing but if there are worn or broken parts the entire operating mechanism must be placed.
The crank arm must first be removed from the guide track. When the window is opened the window can be cranked until the notch on the guide track aligns with the plastic guide bushing. The trim mounting screws must be unscrewed to remove the casement cover and remove the crank. A new crank can then be installed, reversing the procedure.