Bottom Bracket Bearing Service: Removal Tools, Presses, Grease & Checks
Identify the complete bottom bracket before choosing a puller, press or cleaning method. A press-fit cup, a replaceable cartridge inside a cup and a threaded assembly require different work. This reference helps select a documented tool and plan the work; it is not a universal bicycle-repair procedure.
On this page12 sections ⌄
Press-fit tool lookup: BBT-30.4, BBT-90.3 and BBP-1.2
These are Park Tool product scopes, not a statement that every bearing within the listed bore range can be removed by the same operation. Threaded and thread-together cups require their own tools. Reducers and internal sleeves can change what an extractor can reach.
4 reference rows. Filters apply as you type.
On smaller screens, scroll the table sideways to read all columns.
| Tool | Documented use | Boundary to check |
|---|---|---|
| BBT-30.4 | Removal and installation bushings for many 30 mm-spindle press-fit systems, including BB30/PF30. | Some internal sleeves obstruct the remover; a separate press is required for installation. |
| BBT-90.3 | Remover and bushings for many 22/24 mm-spindle press-fit assemblies, including PF41. | Not a universal 19 mm BMX remover. Confirm engagement beyond adapters and covers. |
| RT-1 | Park's option for 25–28.99 mm spindle systems, including DUB, and certain 30 mm exceptions. | Confirm the cup's construction; a diameter range alone is not permission to drive out a threaded unit. |
| BBP-1.2 | Installation press set; documented shell-width range 68–150 mm. | Extraction requires the separate BBP-AOS kit; the press is not an extractor by itself. |
No verified row matches these filters. Clear a field to widen the reference; an empty result does not prove that a part does not exist.
What is special about the BBP-1.2 30 mm drift?
Park identifies the 2292-2 drift as requiring an additional drift between it and the handle, preventing its smaller DUB side from entering the handle opening. Follow the tool's actual stack diagram rather than improvising from bearing diameter.
Does a BB30 removal tool also install the bearing?
A tool set may include pressing bushings but not the press mechanism. Check the contents and required press separately; do not use removal impacts as an installation method.
Press-fit removal and installation: a bounded work sequence
Press-fit removal can damage a bearing or cup. Do not assume an extracted unit is reusable. This sequence helps you check a model-specific procedure, not replace one; it intentionally gives no universal press force, heat treatment, torque or spacer count.
On smaller screens, scroll the table sideways to read all columns.
| Stage | Work to plan | Stop condition |
|---|---|---|
| Identify | Remove the crank by its own procedure; identify cup versus directly seated bearing. | Unknown threading, adapters or integrated wiring. |
| Remove | Engage the specified remover; support the frame and watch the opposite cup. | Poor engagement, unexpected movement or need for uncontrolled force. |
| Inspect | Examine the seat, component and retained parts. | Cracks, damaged seat or unclear repair-fit requirement. |
| Prepare | Use the frame/component maker's prescribed surface preparation. | Conflicting grease, dry-fit or retaining-compound instructions. |
| Install | Use matched drifts and keep the assembly square as it seats. | Binding or unexpected resistance; do not force alignment. |
| Reassemble | Restore covers and spacers; apply the crank's specified adjustment. | Persistent play, binding or uncertain stack order. |
Hope threaded examples: cup tool is not a bearing extractor
The 30 mm BSA manual specifies greased cup threads, hand-starting before tool tightening, and 40–50 N·m for those cups. This is not crank preload and must not be copied to unrelated bottom brackets. Its drive-side cup tightens counterclockwise; the non-drive cup tightens clockwise.
A replaceable bearing inside a removed Hope cup is a different operation from unscrewing the cup. The documents used here identify service parts but do not establish a complete bearing-extraction procedure for every Hope generation.
On smaller screens, scroll the table sideways to read all columns.
| Documented system | Cup tool / reference | Important limit |
|---|---|---|
| Hope 24 mm BSA | HTT179 in the 24 mm manual | Follow that assembly's spacer chart and crank instructions. |
| Hope 30 mm BSA / BBSS30N | HTT188; V2 manual also lists HTT0015S | Check the tool and cup version before use; these are cup-fitting tools. |
Grease and cleaning: keep three lubrication jobs separate
The verified SB-6806-1 product specifies Kyodo Yushi SRL grease or an equivalent; that is a record of this product, not a universal recommendation for all bicycle bearings. Other grease labels cannot be treated as equivalent without their compatibility and performance basis.
For routine care, first distinguish cleaning the outside of the assembly from opening a cartridge. Preserve seal lips, dust covers and the documented lubricant. Cleaning cannot restore a damaged raceway or correct a poor seat. An unverified solvent, fill amount or regreasing interval is not supplied here.
On smaller screens, scroll the table sideways to read all columns.
| Location | What to establish | Common mistake to avoid |
|---|---|---|
| Inside a sealed cartridge | Exact lubricant, serviceability and seal instructions. | Treating every sealed bearing as a user-repackable loose-ball assembly. |
| Cup-to-frame interface | Maker's required grease, dry fit, anti-seize or compound. | Assuming more grease is always correct for every frame material. |
| Crank contact / adjustment parts | Crank-specific lubrication and preload procedure. | Using the cup tightening torque as the bearing preload setting. |
What is the best grease for bottom-bracket bearings?
There is no single verified answer for every bearing, seal and service arrangement. Identify the named bearing and use its specified lubricant and maintenance method. A factory-grease entry is useful evidence, but not authorization to mix greases or open a non-serviceable cartridge.
Can I repack a cartridge like a loose-ball bottom bracket?
Do not assume so. The cartridge may have seals or an assembly design not intended for that operation. A complete loose-ball or caged-bearing procedure requires the exact cup, cone, ball specification and adjustment method.
Record the missing information before replacing anything
Write down the full bearing marking, bottom-bracket model, crank generation, shell dimensions and which side the part came from. Photograph the order and orientation of covers, spacers and reducers. This makes a technical query reproducible instead of relying on a bicycle brand alone.
If the new assembly binds or has play, stop and revisit component identity, seating, spacers and adjustment. Do not hide the symptom by increasing preload, selecting an oversized bearing without approval or adding an undocumented shim. Keep the unresolved requirement in the work record.
What the evidence can — and cannot — tell you
| Observation or context | Interpretation to consider | Verification needed |
|---|---|---|
| Cup has wrench fittings | It may be threaded or thread-together, even in a press-fit frame. | Identify the assembly before using an impact remover. |
| Extractor cannot engage the intended surface | The tool or internal sleeve may be unsuitable. | Stop instead of driving against a seal, spacer or frame edge. |
| Roughness, play or creaking | Bearing damage is only one possible issue. | Identify the source and inspect the complete assembly; do not compensate with arbitrary preload. |
Plan the work safely
Identify and record
Identify the frame interface, bottom-bracket part and crank. Keep the exact manuals and a record of washers, covers and left/right positions.
Check the context
Select a tool that reaches the intended component and a press support that matches the assembly. Wear eye protection and support the work securely.
Verify before acting
Follow the exact component procedure and surface-preparation requirements. Stop at unexpected resistance, damage or uncertain engagement.
Keep the decision traceable
Restore the prescribed seals, spacers and crank adjustment. Check smooth rotation and play before use; unresolved damage requires qualified inspection.
Capture the information a model search cannot guess
Keep this checklist with your inspection or comparison. Checking a box only records that you have collected the item; it does not certify the bearing.
0 of 4 information groups recorded.
Technical basis & editorial scope
Original BearingScope workflow, written for catalogue research and comparison. Manufacturer material is used to check principles, not copied as a product endorsement or substituted for model-specific instructions. Reviewed 1 October 2026.
- Park Tool press-fit tool-selection guidance — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Park Tool press-fit removal and installation guidance — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Park Tool BBT-30.4 tool specification — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Park Tool BBT-90.3 tool specification — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Park Tool BBP-1.2 press specification — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Hope 24 mm threaded bottom-bracket manual, INST012_EN V1 — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Hope 30 mm threaded bottom-bracket manual, INST011_EN V1 in V2 document — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
- Wheels SB-6806-1 / Enduro 6806 record — Exact named component and stated dimensions or procedure scope only. Collected 2026-10-01. No universal fitment, repair approval or independent performance result is inferred.
Source addresses and collection status are retained in the internal audit. No unpublished dimensions, torque settings, service intervals or interchange approvals are inferred.