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Specifications
Hope MTB Bottom Bracket - Steel1.the same as shimano bb50
2.easy to set up to frame
3.OEM and small order
Hope MTB Bottom Bracket - Steel
Drive mechanism:sealed bearingwork:BMX/PERFORMLenght:68MMMaterial:SCM430(axle)Finishing:optionalWeight:233g |
| Bottom Bracket Thread Name | Nominal Thread Description | Cup Outside Diameter | Shell width | Shell Inside Diameter |
|---|---|---|---|---|
| ISO/English or BSA | 1.37 in x 24 TPI | 34.6-34.9 mm Left-hand thread drive side |
68 mm (73 mm Oversize)(83 mm Some Downhill & FR bikes)(100 mm "Fat bikes") | 33.6-33.9 mm |
| Italian | 36 mm x 24 TPI | 35.6-35.9 mm Right-hand thread both sides |
70 mm | 34.6-34.9 mm |
| French | 35 mm x 1 mm | 34.6-34.9 mm Right-hand thread both sides |
68 | 33.6-33.9 mm |
| Swiss (uncommon) | 35 mm x 1 mm | 34.6-34.9 mm Left-hand thread drive side |
68 | 33.6-33.9 mm |
| Chater-Lea (older vintage / uncommon) | 1.450 in x 26 TPI | oversized Left-hand thread drive side |
||
| Whitworth (Raleigh 3-speeds + Raleigh road frames below Super Course) |
1-3/8 in x 26 TPI | 34.6-34.9 mm Left-hand thread drive side |
71/76 | 33.6-33.9 mm |
| O.P.C. Ashtabula | Male threads on crank 24 tpi (most) 28 tpi (Schwinn, Mongoose) |
68 mm (2.68 in) wide | 51.3 mm (2.02 in) (approximate) | |
| O.P.C. Fauber | Male threads on crank | 68 mm (2.68 in) wide | 45 mm (1.77 in) | |
| Raleigh | 1 3/8 in x 26 tpi | 34.6-34.9 mm Left-hand thread drive side |
33.6-33.9 mm | |
| BB30(Cannoondale)[15] | Press fit, not threaded | No cups | 68mm (road) or 73mm (MTB) | 42mm |
| PressFit 30 (SRAMo)[16] | Press fit, not threaded | 46mm composite cups | 68mm (road) or 73mm (MTB) | 46mm |
| BBright[17] | Press fit, not threaded | 46mm composite cups | 79mm | 46mm |
| Shimanoo Press Fit [18] | Press fit, not threaded | 41mm composite cups | 86.5mm (road) 89.5mm or 92mm (MTB) | 41mm |
| BB386EVO | Press fit, not threaded | 46mm composite cups | 86.5mm | 46mm |
| Spanish (BMX) | Press fit, not threaded | No Cups | 68mm | 37mm |
Drive mechanism:sealed bearing(6002RS)
work:MTB,Road length:68-70-73MM
Materia:bowl/AL6061
shell/Nylon
axle/hollow
Finishing:optional
weight:108g
Besides bike pedal,bike axle(bicycle bb bottom bracket) is another accessory series product of Sanyun,which focuses on development,manufacture and sales.Bike axle,produced by Sanyun,is professionally used in medium and senior bikes.Besides square-holed axle BB68,Sanyun also produces BB68A with aluminum BB cups.To get fast-developing DIY repairing market,we have developed hollow axle BB101,spline axle BB91 and press-in axle BB92.Axle series products are comparably complete and with price-performance ratio and good speed-changing system..The compatible property of bike shelf is comparably strong.The demand market of bike axle is very big and consumers have a variety of demand to bike axle.Sanyun can match the most compatible axle accessories for all models of crankset and speed-changer.Sanyun’s prime axles are with bearing structure design.In actual test,the more you use Sanyun’s axles,the smoother they are,the longer life they have because structure design gap is very few and the strength-loss is very few.It is welcome that axle wholesalers and distributing stores puchase our products.
SYUN-LP bicycle pedal is one of SYUN-LP’s main products.At the begining,SYUN-LP began to produce bicycle pedal.Of many manufacturers in China including Taiwan on bike pedals,SYUN-LP’s aluminum alloy bearing pedals,magnesium pedals and junior plastic pedal have inherited the most advanced Taiwan production craft no matter whether in terms of CNC machining,aluminum alloy forging craft or die-casting craft.
With the great improvement of SYUN-LP these years,SYUN-LP’s pedals all have entered the mature stage,no matter whether in terms of exterior structure,surface processing,raw material or the control on product price.A variety of cycling pedals can satisfy the demand of a lot of bike brand businessmen.SYUN-LP factory not only produces the folding pedals for leisure bicycle,but also produces half-aluminum bike pedals.
To take some place in speed growing bike-repaired market,SYUN-LP tries to increase the developing investment on senior pedals.Now,SYUN-LP’s bearing bicycle pedals are seen in all kinds of bike Carniva and bike trip route.As a big brand,SYUN-LP is not known by many bike friends,but SYUN-LP’s brand image and recognition degree has begun to appear.
The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It is not a bracket as such. It contains a spindle that the crankset attaches to, and the bearings that allow the spindle and cranks to rotate. The chainrings and pedals attach to the cranks. The bottom bracket fits inside the bottom bracket shell, which connects the seat tube, down tube and chain stays as part of the bicycle frame.
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