BB Shell - PF30 - 46 x 52 x 100 mm

Name: BB Shell - PF30 - 46 x 52 x 100 mm
SKU: 45296-c100
Price: 274.99 USD
Availability: InStock

P/N: 45296-C100

Available Now: 4

P/N: 45296-C100

Available Now: 4

$274.99

2 - 4

$272.79

5 +

$88.59

Quantity

Estimated lead time for quantities greater than what is Available Now is expected to be at least 4 weeks.

If there is an Available Now quantity listed above, it indicates our quantity in stock. Orders placed today for this quantity or less are expected to ship the next business day.

Click "add/ customize" to add full lengths or to select your custom cut lengths & sanding preferences

Our carbon fiber bottom bracket shell is the part of a bicycle's frame where the bottom bracket and crankset is mounted. This bottom bracket is 46mm ID and is compatible with PF30 (aka Press-fit 30) cranksets. We offer pre-sized lengths for road bikes (68mm), mountain bikes (73mm), fat bikes (100mm), and bikes using the FSA 386EVO standard (86.5mm). We also offer a full 37.4” tube that can be trimmed to any length you desire.

Quick Facts About This 46mm Bottom Bracket

PF30 (aka Press-fit 30) Compatible
Unidirectional Matte Finish
46mm ID x 52mm OD
Glass layer on the inside to minimize corrosion when used with aluminum bearing components

Additional Information

Units:

Application	Bicycle
Frame Segment	Bottom Bracket Shell
Shape	Round
Materials	Standard Modulus Carbon
Pattern	Unidirectional
Color	Black
Finish	Sanded Smooth
Inside Diameter	1.811
Outside Diameter	2.047
Wall Thickness	0.118
Length	3.937
Length (max continuous)	3.937
Linear Density	0.472
Volumetric Density	0.055
Weight	0.155
Primary Fiber	Tenax UTS50
Primary Resin / Hardener	Eporite EHM32
Temperature Rating (F)	250.0
Max Operating Temp- (Tg)	250F to 274F
HTS - Harmonized Tariff Code	6815.13.0000

Engineering Properties

All laminate properties and mechanical calculations are based on Classical Lamination Theory and should be used as a reference only. Rock West Composites does not guarantee these properties or calculations.

Units:

Avg EX Young's Modulus	1.434E7
Avg EY Young's Modulus	5717000.0
GXY Shear Modulus	2036000.0
X Tensile Yield Strength	87920.0
X Compressive Yield Strength	107400.0
Y Tensile Yield Strength	31400.0
Y Compressive Yield Strength	40540.0
XY Shear Strength	18810.0
CTEX	-2.85E-08
CTEY	2.20E-06
Poisson's Ratio vXY	0.188
Poisson's Ratio vYX	0.075

Note:

"X" is along the length of a tube, rod, plate, or panel.
"Y" is around the perimeter of a tube, perpendicular to the length of pultruded parts, or along the width of a plate or panel.

Calculators

Units:

Deflection & Failure of Round Cantilevers

Inputs

Notes:

A green highlight indicates a valid input.
A red box indicates an invalid input.
Part weight is taken into account for all calculations

Label	Value	Units
Point Load	Positive value for downwards force. Negative value for upwards force.	Pounds
Distributed Load (total)	Positive value for downwards force. Negative value for upwards force.	Pounds
Outer Diameter		Inches
Inner Diameter		Inches
Location of Point Load	Number between 0 and the value for Length This is a required field.	Inches
Length	Value up to	Inches

Outputs

Notes:

A green highlight indicates that a sample is unlikely to fail in this manner.
A red highlight indicates that a sample is likely to fail in this manner.

Label	Result	Units
Max Shear Stress		PSI
Max Bending Stress		PSI
Deflection at Point Load		Inches
Max Deflection Location		Inches
Max Deflection		Inches
Deflection at Free End		Inches
Part Weight		Pounds

Deflection & Failure of Simply Supported Round Beams

Inputs

Notes:

A green highlight indicates a valid input.
A red box indicates an invalid input.
Part weight is taken into account for all calculations

Label	Value	Units
Point Load	Positive value for downwards force. Negative value for upwards force.	Pounds
Distributed Load (total)	Positive value for downwards force. Negative value for upwards force.	Pounds
Outer Diameter		Inches
Inner Diameter		Inches
Location of Point Load	Number between 0 and the value for Length This is a required field.	Inches
Length	Value up to	Inches

Outputs

Notes:

A green highlight indicates that a sample is unlikely to fail in this manner.
A red highlight indicates that a sample is likely to fail in this manner.

Label	Result	Units
Max Shear Stress		PSI
Max Bending Stress		PSI
Deflection at Point Load		Inches
Max Deflection Location		Inches
Max Deflection		Inches
Part Weight		Pounds

Round Tubes and Rods - Axial Tension and Compression

Notes

Tension uses positive notation and compression uses negative notation.
End conditions are critical when considering buckling:
- Fixed = constrained in both translation and rotation.
- Pinned = constrained only in translation (ie. bolted joints).
- Free = not constrained (similar to a cantilevered end).
Long, skinny parts in compression are more succeptible to fail in buckling
Only parts in compression can fail in buckling

Inputs

Notes:

A green highlight indicates a valid input.
A red box indicates an invalid input.

Label	Value	Units
Load	Positive value indicates tension. Negative value indicates compression.	Pounds
Outer Diameter		Inches
Inner Diameter		Inches
Length	Value up to	Inches
End Conditions		N/A

Outputs

Notes:

A green highlight indicates that a sample is unlikely to fail in this manner.
A red highlight indicates that a sample is likely to fail in this manner.

Label	Result	Units
Max Axial Stress		PSI
1st Order Buckling Critical Load		Pounds
Change in Length		Inches (linear elastic only)
Part Weight		Pounds

Round Tubes and Rods - Critical Speed and Torque

Inputs

Notes:

A green highlight indicates a valid input.
A red box indicates an invalid input.

Label	Value	Units
Outer Diameter		Inches
Inner Diameter		Inches
Length	Value up to	Inches
Applied Torque		Foot-Pounds
Configuration		N/A

Outputs

Notes:

A green highlight indicates that a sample is unlikely to fail in this manner.
A red highlight indicates that a sample is likely to fail in this manner.

Label	Result	Units
Max Allowable Torque		Foot-Pounds
Twist Angle at Specified Torque		Degrees
Critical Speed _{(no factor of safety)}		RPM
Part Weight		Pounds

Layup Orientation

45296-C100 Rev NC

Ply #	Orientation (degrees)	Location
1	(0/90 120 E-Glass Scrim)	Inside
2	(0/90 120 E-Glass Scrim)	↓
3	0
4	0
5	0
6	45
7	-45
8	0
9	0
10	90
11	90
12	0
13	0
14	90
15	90
16	0
17	0
18	-45
19	45
20	0
21	0
22	0	Outside

0° fibers maximize bending stiffness and run along the length of the part. Consider bending a tube over your knee.
45° fibers maximize torsional stiffness and are typically plied together in an opposing manner, i.e. ±45°. Consider twisting a tube like a vehicle's driveshaft.
90° (or "hoop") fibers maximize crushing stiffness and generally assist in overall durability. Consider laying a tube on the ground and stepping on it.

Technical Data

We cannot supply any test data for this tube at this time, data may come available in the future

Tolerances

All bottom bracket shells have the following tolerance for inner and outer diameter.

ID: ±0.001" (±0.025mm), OD: ±0.003" (±0.075mm)

STOCK TOLERANCE SHEET

Download PDF

Layup Orientation

45296-C100 Rev NC

Ply #	Orientation (degrees)	Location
1	(0/90 120 E-Glass Scrim)	Inside
2	(0/90 120 E-Glass Scrim)	↓
3	0
4	0
5	0
6	45
7	-45
8	0
9	0
10	90
11	90
12	0
13	0
14	90
15	90
16	0
17	0
18	-45
19	45
20	0
21	0
22	0	Outside

0° fibers maximize bending stiffness and run along the length of the part. Consider bending a tube over your knee.
45° fibers maximize torsional stiffness and are typically plied together in an opposing manner, i.e. ±45°. Consider twisting a tube like a vehicle's driveshaft.
90° (or "hoop") fibers maximize crushing stiffness and generally assist in overall durability. Consider laying a tube on the ground and stepping on it.