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Big End Needle Cage 20 x 26 x 15 mm, 16R, B6 – Ø2.992 mm
Big End Needle Cage 20 x 26 x 15 mm, 16R, B6 – Ø2.992 mm
Item no. XBEMAX-B6

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Big End Needle Cage 20 x 26 x 15 mm, 16R, B6 – Ø2.992 mm

TrustpilotTrustpilot +800  reviews
Unit price when buying 1 Pcs.
45,33EUR(excl. VAT)
Out of stock
Expected in stock: 04/09-2026
Send an email when the item is back in stock
 
Delivery date
04/09-2026
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Information
IKO B6 Big End Needle Cage designed for installation in the connecting rod big end between the connecting rod and crankshaft crankpin. The cage contains 16 precision-selected needle rollers and is designed for the extremely high loads and engine speeds found in racing engines.
This version features B6 tolerance and a roller diameter of Ø2.992 mm. B6 has the smallest rollers of the B2, B4 and B6 versions and therefore provides the greatest running clearance of these three when the crankpin and connecting rod dimensions remain identical.
Choosing between B2, B4 and B6 is not a question of quality. The different tolerance classes are used to achieve the correct running clearance in the assembly. B6 can, for example, be selected when B2 or B4 provides insufficient clearance. Even a difference of only a few microns in roller diameter makes it possible to adjust the big end clearance very precisely.
Compatibility:
For engines and crankshafts designed for a 20 x 26 x 15 mm big end needle cage with 16 needle rollers. Always check the crankpin, connecting rod bore and required running clearance before selecting the tolerance class.
Application / Position:
Installed in the connecting rod big end and runs between the connecting rod and crankshaft crankpin.
Installation:
During an engine rebuild, the crankpin diameter, connecting rod bore and roller diameter should always be measured accurately before assembly. Select the correct tolerance class according to the required running clearance. Ensure all components are clean and correctly lubricated during assembly.
Specifications & features:
Dimensions: 20 x 26 x 15 mm
Number of rollers: 16
Tolerance class: B6
IKO classification: Semi-standard
IKO tolerance range: −4 to −6 µm
Roller diameter: Ø2.992 mm
Position: Connecting rod big end
Rollers are 0.002 mm smaller than B4
Rollers are 0.004 mm smaller than B2
B6 provides more clearance than B2 and B4 with identical component dimensions
Roller size overview:
B6: Ø2.992 mm
B4: Ø2.994 mm
B2: Ø2.996 mm
2B: Ø2.998 mm
4B: Ø3.000 mm
6B: Ø3.002 mm
The larger the roller diameter, the smaller the resulting running clearance when the crankpin and connecting rod dimensions remain identical.
 
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