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ROTOR T47 30MM Bottom Bracket
July 31, 2025Price range: $65.00 through $200.00
Your bottom bracket for T47 frames and 30 mm cranks
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ROTOR T47 30MM Bottom Bracket
The T47 bottom bracket shell is quickly becoming one of the most widely used standards by bicycle manufacturers and the ROTOR T47 30MM Bottom Bracket answers the call. Available in either steel or ceramic, these bottom bracket cups are precision-machined in ROTOR’s Spanish manufacturing facility. The bottom bracket works with both 68 mm road and 73 mm MTB shell widths. It features durable bearings, silicone shields, is smooth rolling and made to last.
The outboard version uses external cups, measuring roughly 11.5 mm outboard on each side. The internal version uses internal cups in which the only outboard piece is the castellated flange, which measures roughly 1.7 mm on each side.
ROTOR Bottom Bracket ComparisonÂ
| Model | Bearings | Price | Shell | Cranksets | Weight |
| ROTOR BSA 30MM Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits BSA (English) threaded 68/73 mm shells | Fits 30 mm cranksets | Steel: 96 grams | Ceramic: 89 grams |
| ROTOR ITA 30 Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits ITA Threaded 70 mm frames | Fits 30 mm cranksets | Steel: 54 grams | Ceramic: 49 grams |
| ROTOR BB1 BSA 24MM Road Bottom Bracket | Steel | Ceramic | Steel: $50 | Ceramic: $135 | Fits BSA (English) threaded 68 mm shells | Fits 24 mm cranksets | Steel: 93 grams | Ceramic: 91 grams |
| ROTOR BB1 ITA 24MM Road Bottom Bracket | Steel | $50 | Fits ITA Threaded 70 mm frames | Fits 24 mm cranksets | 91 grams |
| ROTOR T47 30MM Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits T47 68 and 73 mm shells | Fits 30 mm cranksets | Steel: 103 grams | Ceramic: 97 grams |
| ROTOR T47 24MM Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $200 | Fits T47 68 and 73 mm shells | Fits 24 mm cranksets | Steel: 120 grams | Ceramic: 113.5 grams |
| ROTOR UBB 4630 Bottom Bracket | Steel | $115 | Available for PF30, BBRight and 386 EVO frames | Fits 30 mm cranksets | 106 grams | 109 grams | 109 grams |
| ROTOR Press Fit 4130 Bottom Bracket | Steel | Ceramic | Steel: $50 | Ceramic: $200 | Fits PressFit 86/89/92 mm shells | Fits 30 mm cranksets | Steel: 54 grams | Ceramic: 49 grams |
| ROTOR Press Fit 4630 Bottom Bracket | Steel | Ceramic | Steel: $65 | Ceramic: $175 | Fits PF30, BBRight or 386 EVO shells | Fits 30 mm cranksets | Steel: 106 grams | Ceramic: 100 grams |
| ROTOR Track BSA Threaded Bottom Bracket | Steel | $105 | Fits BSA (English) threaded 68 mm shells | Available for 24 mm and 30 mm cranksets | 108 grams | 119 grams |
Compatibility
- Shell: Compatible with T47 68 road and 73 mm MTB shells
- Crankset: Fits 30 mm cranks
Specs
- Shell Width: 68/73 mm
- Shell Type: T47 Threaded
- Axle Size: 30 mm
- Weight: Steel - 103 grams | Ceramic - 97 grams
- Bearings: Durable bearings for smooth action
Tools Needed for Installation
You will need the following tools for installation of this product.
- External Bearings -Â Wolf Tooth BBS4612 Bottom Bracket Tool
- Internal Bearings - ROTOR Lock Ring Tool
Q&A
Have a question about this? Ask the staff.
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Octavio Medina (verified owner) –
The crankset are a beauty of engineering and with this spider potentiometer they make the lightest and most efficient set on the market, it was installed perfectly with the 30 BB Rotor on my Trek Emonda SLR9 2022, super satisfied
Power Meter City –
Thank you so much, Octavio. We hope you will continue to enjoy your new BBs. Ride safe!
Octavio Medina (verified owner) –
Impressive piece of engineering, light and efficient, super satisfied with the BB, the steel ones rotate as if they were ceramic, perfect installation on my 2022 Trek Emonda SLR9 changing to a 30 axle
Power Meter City –
Thank you for this wonderful review, Octavio! Please let us know if there is anything else we can help you with!