We’re going to look at how to quickly and easily replace the ball bearings on a Shimano Calcutta 201D to significantly improve its performance.

You can find our selection of parts for your Shimano Calcutta 201D on the following page:
Shimano Calcutta 201D Upgrade

You can find our selection of parts for your Chronarch 101 BPV on the following page:
Improvement Shimano Chronarch 101 BPV

– Open the side plate to access the adjustment weights; the first bearing is located above it. To remove it, simply remove the metal clip holding it in place. You can use a precision screwdriver for this.

PLEASE NOTE: you should hold it in place with your finger to stop the part flying off when it comes loose!

-Carefully remove the orange part (the seal) that protects the bearing using a sharp object (in this case, a fishhook). You can remove one or both – it’s up to you.

– Apply a drop of oil LBT High-speed oil on the bearing. It’s then up to you whether or not to replace the seal. Fitting it protects the bearing from dirt but must be removed every time you want to oil the bearing, whereas not refitting it makes maintenance easier but leaves the mechanism more exposed. I opted for the second option.

– Place the new bearing in its housing and put the small metal part back in place.

– You can close the sideplate. The second bearing is located in the friction brake lever at Shimano

– Unscrew the knob

– Remove the bearing (if it is really stuck, removing the spool via the sideplate may make it easier to take out).

– Fit the new bearing after first oiling it as described above.

– Replace the small metal part and screw the knob back on.

It couldn't be simpler – it only takes two minutes! Ceramic bearings are noisier than other types, but don't worry, that's perfectly normal.

We’re going to look at how to quickly and easily replace the ball bearings on a Shimano Curado 201G7 to significantly improve its performance.

You can find our selection of parts for your Curado 201G7 on the following page:
Shimano Curado 201G7 Upgrade

You can find our selection of parts for your Curado Bantam on the following page:
Shimano Curado Bantam Upgrade

– Open the side plate to access the adjustment weights; the first bearing is located above it. To remove it, simply remove the metal clip holding it in place. You can use a precision screwdriver for this.

PLEASE NOTE: you should hold it in place with your finger to stop the part flying off when it comes loose!

-Carefully remove the orange part (the seal) that protects the bearing using a sharp object (in this case, a fishhook). You can remove one or both – it’s up to you.

– Apply a drop of special bearing oil to the bearing. It’s then up to you whether or not to replace the seal. Fitting it protects the bearing from dirt but must be removed every time you want to oil the bearing, whereas not refitting it simplifies maintenance but leaves the mechanism more exposed. I opted for the second option.

– Place the new bearing in the housing and put the small metal part back in position. For the photo, I put the orange seal back on the bearing.

– You can close the sideplate. The second bearing is located in the friction brake lever at Shimano

– Unscrew the knob and remove the spring located between the knob and the bearing

– Remove the bearing (if it is really stuck, removing the spool via the sideplate may make it easier to take out).

– Fit the new bearing after oiling it as described above. In this case, I put the orange seal back in place on the bearing for the photo.

– Replace the spring and screw the knob back on.

It couldn't be simpler – it only takes two minutes! The ceramic bearings are a bit noisier than the originals, but don't worry, that's perfectly normal.

We’re going to look at how to quickly and easily replace the ball bearings on a Shimano Calcutta 101 Conquest to significantly improve its performance.

You can find our selection of parts for your 01 Conquest on the following page:
Shimano 01 Conquest Upgrade

You can find our selection of parts for your Citica E on the following page:
Shimano Citica E Upgrade

– Open the side plate to access the adjustment weights; the first bearing is located above it. To remove it, simply remove the metal clip holding it in place. You can use a precision screwdriver for this.

PLEASE NOTE: you should hold it in place with your finger to stop the part flying off when it comes loose!

-Carefully remove the orange part (the seal) that protects the bearing using a sharp object (in this case, a fishing hook). You can remove just one or both – it’s up to you.

– Apply a drop of special bearing oil to the bearing. It’s then up to you whether or not to replace the seal. Fitting it protects the bearing from dirt but must be removed every time you want to oil the bearing, whereas leaving it off simplifies maintenance but leaves the mechanism more exposed. I opted for the second option.

– Place the new bearing in its housing and put the small metal part back in place.

– You can close the sideplate. The second bearing is located in the friction brake lever at Shimano

– Unscrew the knob and remove the spring located between the knob and the bearing

– Remove the bearing (if it is really stuck, removing the spool via the sideplate may make it easier to take out).

– Fit the new bearing after oiling it as described above. In this case, I put the orange seals back on the bearing for the photo.

– Replace the spring and screw the knob back on.

We’re going to look at how to quickly and easily replace the original ball bearings on a Shimano Chronarch 201E7 with hybrid ceramic bearings to significantly improve its performance.
You can find our selection of parts for your Chronarch E7 on the following page:
Shimano Chronarch E7 Upgrade

Video in English