ACROS AZ-44BL Block Lock Headset Upper Part 1 1/8 Inches ZS44/28,6

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Description of ACROS AZ-44BL Block Lock Headset Upper Part 1 1/8 Inches ZS44/28,6

To maximize the compatibility with different fork steerers, bikes and frames, the upper and lower parts of ACROS headsets are being offered separately in a great variety of dimensions.

The semi-integrated ACROS AZ-44BL Headset Upper Part features the established seal technologies from ACROS and high-end bearings in stainless quality.
The AZ-44BL integrates the innovative Block Lock steering limiter system (steering angle: 164°) to prevent frame damage due to handlebar or fork impacts. Cutouts in the upper cup guide a pin on the headset top cap and mechanically limit the steering. The impact forces at the steering limits are reduced by elastomer bumpers to increase the grade of protection. The Block Lock steering limiter is especially suited for super-light and delicate carbon frames.

Precisely manufactured angular contact bearings made of stainless steel form the heart of the AZ-44BL and offer play-free and smooth steering characteristics for a long time.
The right sealing technology is equally important as the highest quality bearings when it comes to high-end components. For the AZ-44BL ACROS uses the R3 seals featuring a specially shaped sealing lip with steel-plate reinforcement to achieve the best possible properties. The slide-on seal is firmly seated, defining and guaranteeing optimized function with low friction.

The name ACROS AZ-44 describes the semi integrated (also known as press fit or zero stack) 1 1/8" Ahead headset for frames with a 44mm inner diameter head tube. The S.H.I.S. denotation of the upper part offered here is ZS44/28,6. Stack height 21,9mm.
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Fact Sheet of ACROS AZ-44BL Block Lock Headset Upper Part 1 1/8 Inches ZS44/28,6

Product Name: ACROS AZ-44BL Block Lock Headset Upper Part 1 1/8 Inches ZS44/28,6
Manufacturer: ACROS
Item Code: ACR346621
Year: 2019
Manufacturer item code: black: 51.02.605R2S
red: 51.04.605R2S
blue: 51.05.605R2S
Material: headset cup: aluminium
bearing: stainless steel
Weight: approx. 81 gram (manufacturer information)
S.H.I.S.: ZS44 / 28.6
Construction type (Ahead/Thread): Ahead
for fork diameter: 1 1/8"" straight
Stack height in mm: 21.9
Cup skirt length in mm: 7,7 mm
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Selection: ACROS AZ-44BL Block Lock Headset Upper Part 1 1/8 Inches ZS44/28,6
Still 4 in stock in stock, delivery time 11-13 days Color black
Still 2 in stock in stock, delivery time 11-13 days Color red
Currently not in stock Delivery time 2-3 weeks Color blue
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