CEMA Bearing Bottom Bracket Replacement Tool

Replacing bottom bracket bearings and -cups is easy, when you have the right tools. CEMA Bearing Professional Bottom Bracket Replacement Tool, with type number SRC-TT-B006C, is in my opinion the best solution currently available. In this article I will reason why and explain the steps I’ve followed to install a new Bottom Bracket with ceramic bearings.

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WHICH REPLACEMENT TOOL FOR PRESS FIT BOTTOM BRACKETS  ?

Art’s Cyclery explains various tools to remove  press fit bottom brackets in the YouTube video “Ask a Mechanic: Removing BB86 and BB92 Bottom Brackets“.

1. Tools where you need to hammer out the bearings and cups, like the Park Tool BBT-90.3 Press Fit Bottom Bracket Bearing Tool Set;
2. Tools that use a spindle to drive out the bearings and cups, like the Enduro Bearings BRT-003 Tool

The second option is more controlled, and you minimize the risk of damaging tool, bearings or frame. The CEMA Bearing SRC-TT-B006C works very much like the Enduro Bearings BRT-003 Tool. However it can be used for almost every (press fit) bottom bracket type, as you can read on the CEMA Bearing SRC-TT-B006C product page:

• BSA BB bearing replacement for Shimano/SRAM/all system;
• Press Fit BB Bearings replacement for all system;
• Interlock BB bearing replacement for CEMA;
• BB30 bearing replacement for FSA/SPACELINE BB30/BBright BB30;
• Press Fit/ Interlock BB Cup remove for all system;
• External BB Cup protection for Shimano/FSA/SRAM external thread;

So you buy one tool-set and can replace them all. 🙂

The value for money is really good and a re-seller in Belgium minimized the shipping costs.

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INSTALLING A NEW CERAMIC BOTTOM BRACKET FOR BB86/BB92

My Canyon Ultimate CF SLX is equipped with a Shimano BB92-41B Press fit 86,5 Road bottom bracket. The plastic cups of this press fit bottom bracket started to release from the frame, providing 1 or 2 mm. between the cup edge and the frame. So I wanted to install a Bottom Bracket with aluminum cups and ceramic bearings.

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DRIVING OUT THE OLD BEARINGS AND CUPS

Remove the drive-side bearing

1. Remove your Shimano Dura Ace 9000 Hollowtech II crankset;
2. Remove the bottom bracket dust caps if needed.  In my case that wasn’t required;
3. Place the Bearing Removal Ring for 24 mm (with part# SRC-TT-B006C-8) inside the drive-side bearing facing outward so the edge will grab behind the bearing;
4. Slide extractor tube (with part# SRC-TT-B006C-3) in from the non-drive-side and make sure the Bearing Removal Ring for 24 mm is place on the extractor tube;
5. Slide Thread Screw (with part# SRC-TT-B006-14) from the non-drive-side through the extractor tube. In other words the head of the thread screw is on the non-drive-out side;
6. Wind the External Bearing Cup (with part# SRC-TT-B006C-2) on the thread sticking out on the drive-side. Turn the thread screw so that the external bearing cup is flat against the bottom bracket side from your frame-set;
7. Tighten the thread screw to remove bearing, and in my case the plastic cup of the Shimano BB92-41B Pressfitt 86,5 Road bottom bracket came loose as well (just as you can see in the instruction video here);

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Remove the non-drive-side bearing

Removing the non-drive-side bearing and cup basically follows the same procedure. However after step 4:

1. Place the Bearing Removal Ring for 24 mm (with part# SRC-TT-B006C-8) inside the non-drive-side bearing facing outward so the edge will grab behind the bearing;
2. Slide extractor tube (with part# SRC-TT-B006C-3) in from the drive-side and make sure the Bearing Removal Ring for 24 mm is place on the extractor tube;
3. Use the used the old plastic cartridge unit and the gasket (with part# SRC-TT-B006C-7), to drive out the non-drive side bearing (since, the plastic Shimano cup came loose);
4. Slide Thread Screw (with part# SRC-TT-B006-14) from the drive-side through the extractor tube. In other words the head of the thread screw is on the non-drive-out side;
5. Place the External Bearing Cup (with part# SRC-TT-B006C-2) on top of the 48 mm. Spacer (with part# SRC-TT-B006C-11);
6. Wind the the External Bearing Cup (with part# SRC-TT-B006C-2) on thread sticking out on the non-drive-side and make sure the plastic spacer rests against the frame. Turn the thread screw so that the external bearing cup is flat against the bottom bracket side from your frame-set;
7. Tighten the thread screw to remove bearing, and in my case the plastic cup of the Shimano BB92-41B Pressfitt 86,5 Road bottom bracket came loose as well (just as you can see in the instruction video above);

In addition to the good instruction video below, there is a complete operating manual available in pdf format. However I preferred looking at the video a few times.

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PRESSING IN THE NEW CUPS AND BEARINGS

Pressing in the new Ceramic Bottom Bracket is pretty easy.

1. Make sure the bottom bracket area ad surface where the new aluminum cups are pressed is clean;
2. First I applied some Morgan Blue Aquaproof Paste in the frame, just as the Wanty-Groupe Gobert mechanic did (Remarkably the Canyon Ultimate CF SLX doesn’t have an aluminum lug inserted in the bottom bracket area, so the cups are directly pressed into the carbon frame-set);
3. Hand fit the bearings and cups into the bracket area;
4. Slide Thread Screw (with part# SRC-TT-B006-14) from the right side through the bottom bracket with Adapter 24 mm x 25 mm (with part# SRC-TT-B006C-4) on this side and adapter 24 mm x 30 mm (with part# SRC-TT-B006C-6) on the other side;
5. Fit the 24 mm. adapters into the Ceramic Bottom Bracket bearings and place a nut on the end of the thread screw;
6. Put a wrench on the nut and tighten the thread screw to start pressing the cups into the frame. Although the Morgan Blue Aquaproof paste is applied, you hear some noises due to the perfect tolerances of the Ceramic Bottom Bracket;
7. Stop tightening when the cup edges are against the frame;

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CONCLUDING THOUGHTS AND WRAP-UP

The CEMA Bearing SRC-TT-B006C Professional Bearing Replacement Tool is recommended for cycling shop or repair center use. It also works really well for a home mechanic, you just need to invest a little time on how to use it. There are good instruction videos and operating manuals available.

The price is of the CEMA Bearing SRC-TT-B006C Professional Bearing Replacement Tool is EUR 185,-. Not cheap, but the value of this tool-set is that you can remove and install  almost every (press fit) bottom bracket type. Good tools are more cost effective in the long run. For example I have my PB Swiss Tools allen keys for 15+ years now.

If you are in the race for bottom bracket replacement tools than the CEMA Bearing SRC-TT-B006C Professional Bearing Replacement Tool should be on your short list.

Interested in other reviews, than please check out the categories below:

Which tools do you use to remove a bottom bracket ?

Other CEMA Bearing product reviews on cycling-review.net:

• CEMA Bearing Professional Bottom Bracket Replacement Tool
• CEMA Bearing Full Ceramic pulley wheels
• CEMA Bearing Interlock BB86-BB92 Bottom Bracket