Craftsman 351.252741-3 Operator's Manual page 2

Warranty....................................... 2
Safety Rules .................................... 2
Assembly ...................................... 2
Operation ...................................... 2
Maintenance .................................... 3
Parts Illustrationand List ......................... 4-5
Espafiol ...................................... 6-7
FULL ONE YEAR WARRANTY ON CRAFTSMAN
CROSS VISES
If within one full year from the date of purchase, this
Craftsman Cross Vise fails due to a defect in materfel or
workmanship, Sears will repair it free of charge.
Warranty service is available by simply returning the Cross
Vise to the nearest Sears Store or Service Center throughout
the United States.
This warranty gives you specific legal rights and you may
have other rightswhich vary from state to state.
Sears, Roebuck and Co., Dept 817WA, Hoffman Estates, IL
60179
• Understand and obey all safety instructionssupplied with
drill press, mill, or other machines on which vise is used.
• Bolt or clamp vise to work surface in at least two mounting
locations using mounting flanges provided on base.
• Be sure workpiece is clamped securely between jaws
before starting machining operation.
• Do not over tighten--vise can develop a large damping
force. Use only force which is needed.
• Do not pound or hammer on workpiece. This vise is
designed to clamp the workpiece in a desired position for
machining operations only.
MODEL 252741, 3" VISE
Refer to Figure 1.
• Mount crank handles (Fig. 1, No. 12) to longitudinaland
cressfeed leadscrews (Fig. 1, Nos. 9 and 23) using acorn
nuts (Fig. 1, No. 13).
• This vise is shipped with a protective coating. This coating
should be removed before operation. Remove protective
coating with penetrating oil.
MODELS 252181 AND 253351,6" AND 8" VISES
Refer to Figure 1.
• Thread movablejaw leadscrew (Fig. 1, No. 14) through end
of body (Fig. 1, No. 16) and into hole in movable jaw (Fig. 1,
No. 18).
• Secure with dog point set screw (Fig. 1, No. 19)
• Mount crank handles (Fig. 1, No. 12) to longitudinaland
crossfeed leadscrews (Fig. 1, Nos. 9 and 23) using acorn
nuts (Fig. 1, No. 13).
• This vise is shipped with a protectivecoating. This coating
should be removed before operation. Remove protective
coating with penetrating oil.
2
DESCRIPTION
Cross Vises travel on two separate axes_ongitudinal and
crossfeed, to permit accurate positioningof workpiece. Body,
saddle, base and jaws are made of high strength cast iron.
Vise feadserew, longitudinaland crossfeed leadsorews are
precisfen ground carbon steel. A prismaticjaw is provided for
clamping round stock.
Refer to Figure 1.
• Mount vise to work surface in desired location by securing at
least two mounting flanges located on base (Fig. 1, No. 1).
• Move saddle (Fig. 1, No. 3) by rotating longitudinal crank
handle (Fig. 1, No. 12). Tighten center set screw (Fig. 1,
No. 6) to secure position.
• Move body to desired position by rotating crossfeed crank
handle (Fig. 1, No. 12). Tighten center set screw (Fig. 1,
No. 6) to secure position.
• Open jaws of vise. Place workpiece between jaws in
desired position. Rotate movable jaw leadscrew (Fig. 1, No.
14) to secure workpiese between jaws. Be sure workpiece
is secure in vise before starting machining operation.
SPECIFICATIONS
Longitudinal travel (left to right) .............. 5" (252741)
..................................... 8" (252180)
..................................... 8" (253351)
Cress travel (front to back) ................. 5" (252741)
..................................... 8" (252180)
..................................... 8" (253351)
Jaw Width.............................. 3_ (252741)
..................................... 6" (252180)
..................................... 8" (253351)
Maximum Jaw Opening ................... 3" (252741)
..................................... 6" (252180)
..................................... 6" (253351)
Value of One Division ................ 0.0039" (252741)
................................. 0.0039"(252180)
................................. 0,0039" (253351)
Cross Travel per One Revolution........ 0.1181" (252741)
................................. 0.1575" (252180)
................................. 0.1575"(253351)
Longitudinal Travel per One Revolution... 0.1181" (252741)
................................. 0.1575" (252180)
................................. 0.1575"(253351)
MOUNTING PRISMATIC JAW
One prismatic jaw is provided. This prismatic jaw can be sub-
stituted for either flat jaw plate.
• Attach prismatic jaw to work on round stock. Deep V-slots
allow both horizontaland vertical damping.