TECHNICAL MANUAL
BLUE PAPER ALMA CARBON ·
OMR & OMX 2021
26 | ORBEA
ORBEA | 27
EN
Alma OMX and some models and options in Alma OMR
include the Blocklock headset option with the OC3 MTB
stem, which limits the steering angle to 164º without
affecting maneuverability to avoid impacts of the levers on
the frame in case of an accident, specially in assemblies
without any headset spacers or with the stem positioned
with a negative angle.
HEADSET
OC3 STEM ASSEMBLIES.
WITH BLOCKLOCK HEADSET
The Blocklock assemblies include the OC3 MTB stem,
which determines also the use of specific OC headset spa-
cers, headset cover and stem topcap.
GREASE
2.2
2.3
2.2
3.1
3.2
4.1
4.2
HEADSET
SPECIFICATIONS
TYPE
ID*
OD**
BEARING
ANGLE
SHIS
CODE
BEARING
DIMENSIONS
TOP
1-1/8” Semi
integrated
BlockLock
44mm
50mm
Semi integrated
Replace assembly
Orbea
specific
Orbea specific
Replace assembly
BOTTOM
1-1/2"
Integrated
52.1mm
56mm
45º
IS52/40
Angular contact bearing
40x52x7mm
* ID: Internal headtube diameter.
** OD: External headtube diameter.
02
BLOCKLOCK HEADSET COVER ASSEMBLY
ART Nº: X0300000
QUANTITY
2.1
BLOCKLOCK HEADSET COVER TOP
1
2.2
BLOCKLOCK HEADSET COVER BOTTOM
1
2.3
BOLT M4x16
1
03
BLOCKLOCK CUP AND BEARING ASSEMBLY
ART Nº: X0310000
QUANTITY
3.1
BLOCKLOCK COMPRESSION RING
1
3.2
BLOCKLOCK CUP+BEARING ASSEMBLY
1
04
BOTTOM BEARING KIT
ART Nº: X0220000
QUANTITY
4.1
ANGULAR CONTACT BEARING 40x52x7
1
4.2
FORK CROWN RACE 1-1/2"
1
