Jig Saw: Bad Vibration
If your jig saw is experiencing bad vibration, this can really impact the precision of your work. The most common parts that are associated with this problem are the base, guides, bearings, and blade. Once you have figured out which part is causing the issue, read our troubleshooting and repair guide for tips on how to fix it yourself. Refer to your owner's manual for instructions relating to your model.
A bad bearing will feel rough when spinning. A smooth-spinning bearing indicates it is okay. To replace a bad bearing, use a bearing separator to remove. Once the separator is installed onto the bearing, place the separator on top of the bench vice. Open enough so it will not make contact with anything but the separator, then tap on the shaft with a punch and a hammer until the bearing is free. You can also use a...
A bad bearing will feel rough when spinning. A smooth-spinning bearing indicates it is okay. To replace a bad bearing, use a bearing separator to remove. Once the separator is installed onto the bearing, place the separator on top of the bench vice. Open enough so it will not make contact with anything but the separator, then tap on the shaft with a punch and a hammer until the bearing is free. You can also use a bearing puller to remove the bearing.
To install a new bearing, place a socket on the inner race of the bearing to avoid any damage. Tap in place with a hammer. Reinstall the armature back on the housing and reinstall the brushes. While the case is open, check the bearing on the gear that fits on the mechanism that transfers the rotary motion into reciprocating motion. Remove this gear and spin the bearing on it. If you suspect it is bad, replace the bearing on it. This is a small bearing, so it may be a lot easier to replace the gear with the bearing already on it. Install the gear back in the housing, ensuring the bearing is inside the mechanism that moves the blade up and down. Once the jigsaw is repaired, reassemble the case back together and reinstall the base.