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SERIES LE260 - “CARD-LOK” RETAINER (EXTRACTING/LEVER-LOK)
Series LE260 “Card-Lok” Retainer (extracting/lever-lok)
Calmark offers the Series LE260
Extracting/Lever-Lok (“Card-Lok”)
retainer for cold plate/heat-exchanger
applications. This totally unique design
provides the significant feature of Board
Module Assembly extraction in addition
to tool free lever action locking. The
Series LE260 provides visual indication
of accurate, repeatable locking to a
preset clamping force.
FEATURES
n Safe and easy Board Module Assembly
extraction with 4:1 mechanical
advantage
n Tool free actuation
n Visual indication of locked or
unlocked status
n Preset and adjustable clamping force
n Maintained wedge and body
alignment for easy installation
n Special lengths, finishes, or other
design options available on request
MATERIALS & FINISHES
WEDGES, SHAFT AND LEVER
Material:
Aluminum Alloy 6061-T6, ASTM-B221
Finish:
Wedge & Shaft: Black Anodize per
Mil-A-8625 Type II, Class 2
Wedges: also have Dry Film Lube per
Mil-L-46010 Type 1
Lever: Hard Black anodize per Mil-A-
8625 Type III, Class 2
ADJUSTMENT SCREW
Material:
Stainless Steel per ASTM-A582\QQ-S-763
Finish:
Passivate per Mil-S-5002
Locking element per Mil-F-18240
HARDWARE
Material:
Front Washer: MPIF Standard 25
Rear Washer: ASTM-A240
Spring Washers: ASTM-A266
Finish:
Passivate per Mil-S-5002
WEIGHT
1.17 g/cm (.105 oz/in)
Recommended Gap:
Board Module Assembly
thickness plus 7.62 (.300)
Cold Plate
Board
Module
Assembly
Square
Flatwasher
Shaft may be riveted,
screwed or bonded
to Board Module Assembly
Wedges
Spring
Washer
Stack
Adjustment
Screw
Lever
Arm
41
www.calmark.com •800-854-7086
LE260 - 3.80 T0 -1 P
Suffix options
Assembly length from 2.50 (63.5) to 12.99 (329.9) ____
length.xx
Preferred lengths are 71.12 (2.80), 96.52 (3.80) and 121.9 (4.80)
Other lengths available upon request
Mounting Options - 0-80 tapped holes __________________________ T0
or choose from Mounting Option Table ______________________
see table
Lever Direction __________________________________________________ -1
______________________________________________________________ -2
Factory Preset clamping force when expanded to 7.62 (.300)
556N (125lbs) ________________________________________________________ P
645N (145lbs) ________________________________________________________ P1
None __________________________________________________________
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Part Number Code
Series LE260 Card-Lok Five Piece
SERIES LE260 - “CARD-LOK” RETAINER (EXTRACTING/LEVER-LOK)
CLAMPING FORCE ADJUSTMENT
PROCEDURE
Lever-Lok furnished assembled
with spring stack preloaded but
not adjusted.
1. Fasten Lever-Lok to Board Module
Assembly
2. Insert Board Module Assembly into
slot in cold plate
3. Actuate lever to locked/closed
position
4. Tighten screw on end of shaft until
wedges initially contact wall of
cold plate slot, or slight insertion
extraction drag is felt
5. Additionally tighten locknut
two full turns. DO NOT EXCEED
TWO (2) TURNS.
6. Lever-Lok is now ready to use
NOTE: Factory adjustment of clamping
force available on request. See part
number code.
CLAMPING FORCE DATA
Direct force of assembly is
approximately 556N (125lbs), when
adjusted per recommended procedure.
Direct force of assembly is affected
approximately as follows:
26.7N (6lbs) per each .025 (.001)
variation of cold plate slot width,
or 169N (38lbs) per each full turn
of screw.
Part Number Code Example:
LE260-2.80TM2-1P1
Series LE260 five piece lever actuated Card-Lok with
extractor feature, 71.12 (2.80) long with M2 x .40 tapped
mounting holes, -1 lever direction and factory preset for
645N (145lbs) clamping force when expanded to .300 DIM.
MOUNTING METHOD TABLE
Code
Letter Method
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2-56 tapped hole
“T0” 0-80 tapped hole
“TM2” M2 x 0.40 tapped hole
“TM2.5” M2.5 x 0.45 tapped hole
Assembly Length
Capable of
expansion range
of 6.86 (.270) to
8.26 (.325).
Adjustment
required to an
exact dimension
within this
range.
6.86
(.270)
max.
6.35 (.250)
2.67 (.105) Assembly Length + 16.5 (.65) when fully relaxed and unadjusted.
Dimension will shorten by 5.3 (.21) when adjusted.
-1 Shown
-2 Opposite
4.95 (.195) Ref. M/2 ± .13 (.005)
2.38 (.094)
Hex Socket Cap
Per ANSI/ASME
B18.3
3.31 (1.305)
3.63 (1.43)
13.29 (.527)
Units: mm (in)
Unless specified otherwise,
.xx = ± .25, .x = ±.5
(.xxx = ± .010, .xx = ± .02)
M = Assembly Length
minus 48.26 (1.90) ± .13 (.005)
