Kurt HDL4 Instruction Manual

HDL4 MANUAL
ASSEMBLY
Operating Instruction Manual
HDL4 (English) & HDLM4 (Metric)

2
TABLE OF CONTENTS
Introduction ...................................................................................................... 3
Setup Instructions........................................................................................... 4
Vise Installation Instructions ........................................................................ 5
Operating Instructions.............................................................................. 6-14
HDL4 Parts List..............................................................................................15
HDL4 Mechanical Drawing..........................................................................16
Maintenance Schedule........................................................................... 17-18
Troubleshooting Tips....................................................................................19
Maintenance Log/Notes..............................................................................20
Warranty..........................................................................................................21
VISE DATA
Use this to ll out information about your vise for quick reference.
Purchase Date: ________ -________ -__________
Purchase Order: ______________________________
Purchased From: ______________________________
Delivery Date: ______________________________
Serial No.: ______________________________
NOTE: MAKE SURE TO REGISTER YOUR WARRANTY ONLINE AT
KURTWORKHOLDING.COM
TABLE OF CONTENTS

3
INTRODUCTION
Thank you for purchasing a Kurt HDL4 vise. You have just purchased
one of the best machine vises in the industry. The outstanding accuracy
of this product is second to none. Backed by a lifetime warranty against
workmanship and material defects, this product is built to last when used
and maintained properly.
The original Kurt Anglock vises are designed for precision clamping on
basic machine tools such as knee-type mills and machining centers. They
can be used for, but are not limited to, operations like precision boring,
drilling, tapping, & nishing.
The patented Anglock design allows the movable jaw to advance in such
a way that each pound of force forward induces a ½ pound of force
downward which minimizes the jaw lift and increases accuracy (Fig.1).
This, combined with the needle bearings, increases jaw clamping pressure.
Other features include: 80,000 psi ductile iron body, hardened vise bed &
jaw plates, and a semi-hard steel screw.
INTRODUCTION
Fig.1
Stationary jawMovable jaw Movable jaw
Nut
Screw Screw brush seals

4
SETUP INSTRUCTIONS
Now that you have your new Kurt Vise, it’s time to set-up and begin using
it. You will see that your new vise comes with a Kurt swivel handle. The
handle is specically designed to provide maximum torque to your vise
(clamping force provided below). Your vise should be mounted to a clean,
at surface. The surface and the vise must be free of any chips, dirt, or
debris of any kind. The mounting surface can be honed if necessary. Clean
the bottom of the vise with solvent or another cleaner if needed.
To minimize vise bed deection, clamp your Kurt vise to your machine
table, pallet, or sub-plate using the built-in clamping slots or through the
body holes provided.
Additional clamping can be used, but may not be necessary. Please be
sure to exercise good judgment when securing your vise to the mounting
surface. Be sure your vise is secured and will not move when applying
cutting pressure.
SETUP INSTRUCTIONS
HDL4 / HDLM4
TORQUE FT-LBS CLAMPING FORCE - LBS
10 1000
20 2100
30 3100
40 4000
50 4950
60 5850

5
1. Position vise on your machine table, pallet or tombstone using the
.625 or 16 MM (.6299”) locating holes found on the bottom of the vise.
We recommend using the holes that are the farthest apart for better
accuracy.
2. Bolt in place using strap clamps placed on the clamping ledge as
indicated by “Clamp Here” sticker or by bolting directly through the
vise body. When bolting through the body, the stationary jaw must be
removed to gain access to those holes. The outboard holes have plugs
to keep debris out and must be removed if you wish to use those holes
as well. Replace plugs after bolts are secured.
VISE INSTALLATION INSTRUCTIONS
INSTALLATION INSTRUCTIONS
Do not attempt to lift the vise by attaching to any of
the jaws or injury may result. Always attach lifting
device to the vise base frame.
!
CAUTION
NOTE: Some of the clamp holes are at inch locations and some are at
metric. For exact hole locations, go to pages 13-14 in this manual.
3. After the vise is mounted in place, add the vise jaws to the base
assembly. See jaw installation instructions that came with the jaw
kit. If a hard jaw kit “J style” was installed, tram the stationary jaw for
straightness prior to using. If it exceeds .0006” in six inches, remove
stationary jaw and disassemble the 10mm bolt, the tapered top clamp
and .750 dia. split sleeve and clean with solvent and a clean cloth. Do
Not apply grease or oil to these components. Re-assemble and retest.
This should not be necessary when using the carvable type unless a
high degree of accuracy is required and you are not recutting the jaw
contour.

6
OPERATING INSTRUCTIONS
For proper vise operation, insert the handle on to the hex end of the vise.
Rotate clockwise to clamp and counterclockwise to unclamp your vise.
This handle, combined with the correct amount of torque, will provide you
with all the clamping force you will need to machine your parts.
DO NOT use any other type of pressure to open or close your vise.
The uses of handle extensions, air impact wrenches, breaker bars, or
hammer strikes are not recommended and will void the warranty if used.
This will also cause damage to the thrust bearing and screw threads. If
you need more clamping force you may require a larger vise.
One-Sided Clamping:
To properly clamp a part in your Kurt double-station vise, you should
place the parts in the center of the jaws resting on the ways of the vise.
Clamping only on one side or above the movable and stationary jaws can
result in jaw lift or loss of accuracy. (See Fig. 2 on next page)
If one-sided clamping is necessary, you MUST use a dummy part on the
other side. When using parallels or step jaws, you must select a size that
keeps the bottom of the clamped part at or below the top of the movable
and stationary jaws.
Always use jaw plates for clamping. If jaw plates are not used, damage to
the mounting surface of the movable and stationary jaw will occur. This
will result in reduced clamping accuracy and repeatability.
OPERATING INSTRUCTIONS

7
OPERATING INSTRUCTIONS
Fig.2
Sketch #2A
Incorrect part
clamping.
Vise width
centerline
Sketch #2B
Correct part
clamping
Sketch #2C
Correct part
clamping
Sketch #2D
Correct part
clamping
Dummy
spacer

8
OPERATING INSTRUCTIONS
Clamping with Different Sized Parts:
If clamping parts of different sizes, place the smaller part in the front
station and the larger part in the back station as shown in Fig. 3 below.
OPERATING INSTRUCTIONS
Fig.3
Back Station:
Larger
Part
Front Station:
Smaller
Part
Caden Hill 3/3/2021
MINNEAPOLIS
KURT
DESIGNED
MANUFACTURING
COMPANY
DETAILED
CHECKED
APPROVED
TOOL NAME
TITLE
MODEL OF TOOL
KURT DWG.NO.
CUSTOMER
CUSTOMER PART NO.
SCALE
SHEET OF
TOOL NO.
MATERIAL
OR
DESCRIPTION
SIZE
DWG.
B
TOLERANCES UNLESS NOTED INCHES
.XXXX
DECIMAL
ANGLES
.X
.XX
.XXX
± .0005
± 1°
± .05
± .02
± .005
1:5
1 1
REV
ECO DESCRIPTION DATE BY
RELEASED
A
REVISION LEVEL
1 234
1 234
A
B
C
A
B
C
Q:\Engineering\Engineers Files\Levi T\Rendering
Projects\Reference Models\

9
OPERATING INSTRUCTIONS
Clamping Using Only 1 Station:
If desiring to use only one side of the double-station vise, you must use a
dummy block in the other station as shown in Fig. 4 below.
Converting to a Single Station Vise:
If desiring to convert your double station vise to a single station, you will
need to get a Kurt conversion kit through our website, kurtworkholding.
com. This kit includes a mounting plate that bolts to the rear of the vise
and holds the back jaw in place. The center stationary jaw will need to be
removed as well. See Fig. 5 below.
OPERATING INSTRUCTIONS
Fig.4
Fig.4
Larger
Dummy
Part in
Back Station
Part in
Front
Station
Caden Hill 3/3/2021
MINNEAPOLIS
KURT
DESIGNED
MANUFACTURING
COMPANY
DETAILED
CHECKED
APPROVED
TOOL NAME
TITLE
MODEL OF TOOL
KURT DWG.NO.
CUSTOMER
CUSTOMER PART NO.
SCALE
SHEET OF
TOOL NO.
MATERIAL
OR
DESCRIPTION
SIZE
DWG.
B
TOLERANCES UNLESS NOTED INCHES
.XXXX
DECIMAL
ANGLES
.X
.XX
.XXX
± .0005
± 1°
± .05
± .02
± .005
1:5
1 1
REV
ECO DESCRIPTION DATE BY
RELEASED
A
REVISION LEVEL
1 234
1 234
A
B
C
A
B
C
Q:\Engineering\Engineers Files\Levi T\Rendering
Projects\Reference Models\
Conversion
Mounting Plate

10
4.00
1.40
.643 .643
2.714
.888
HDLM4AL-2
4.00
4.00
1.90
.643 .643
2.714
.888
HDLM4AL-2.19
4.00
NON-CUTTABLE
AREA
NON-CUTTABLE
AREA
OPERATING INSTRUCTIONS
STANDARD JAW OPTIONS
Standard J-Style Hard Jaws:
The standard J-style hard jaws are made of ductile iron and are paired with
Kurt standard jaw plates. For dimensional information and jaw positioning,
see Fig. 7 and Fig. 8 on pages 11-12.
Aluminum Carvable/Machinable Jaws:
The Aluminum Carvable jaws come in two different jaw heights - 1.40” and
1.90”. These jaws can be can be machined in the carvable regions of the
jaw (See carvable region in Fig. 6) to hold curved and contoured shaped
parts. DO NOT cut into the non-carvable region.
Cast Carvable/Machinable Jaws:
The cast ductile iron carvable jaws have a jaw height of1.40”.
Fig.6

11
OPERATING INSTRUCTIONS
JAW POSITIONING
AA 2.984
BB 6.437
CC 4.781
DD 7.687
Fig.7
C
MINNEAPOLIS
KURT
DESIGNED
MANUFACTURING
COMPANY
DETAILED
CHECKED
APPROVED
TOOL NAME
TITLE
MODEL OF TOOL
KURT DWG.NO.
CUSTOMER
CUSTOMER PART NO.
SCALE
SHEET OF
TOOL NO.
MATERIAL
OR
DESCRIPTION
SIZE
DWG.
B
TOLERANCES UNLESS NOTED INCHES
.XXXX
DECIMAL
ANGLES
.X
.XX
.XXX
± .0005
± 1°
± .05
± .02
± .005
1:5
11
REV ECO DESCRIPTION DATE BY
RELEASED
A
REVISION LEVEL
1234
1234
A
B
C
A
B
Q:\ENGINEERING\ENGINEERS FILES\LEVI T\RENDERING
PROJECTS\REFERENCE MODELS\
AABB
A 3.125
B 6.000
C 21.00
D 2.690
E 10.187
F 1.450
G
H
I
J 1.485
K 4.000
L 1.735
M 0.725
N
O 3.875
P
Q
R
S
T
U
V
W
X
Y
Z
AA 4.00
BB 8.72
CC 5.96
DD 10.69
G
G
HH
M
M
NN
O
O
PP -
Q
Q
AA 4.00
BB 8.72
CC 5.96
DD 10.69
AA 4.00
BB 8.72
CC 5.96
DD 10.69
DD AA
BB CC
Note: Dimensions below are in inches unless specied.

12
L
M D K
JA
WW
XX
E
C
O
B
P [TYP]
OPERATING INSTRUCTIONS
SIDE & END VIEW
A2.375
B4.000
C16.375
D2.344
E7.875
F1.326
J1.115
K2.906
L1.235
M0.547
O2.500
PM8 x 1.25
FF
Max 3.00
WW 1.375
XX 2.563
Fig.4
Note: Dimensions below are in inches unless specied.

13
OPERATING INSTRUCTIONS
MOUNTING LOCATIONS
F1.33
FF 0.75
GG 0.787
HH 50 mm
II II 2.625
KK 5.25
MM 1.5
NN 40 mm
OO M8 SHCS
PP 5/16
SHCS
QQ 0.625
RR 16 mm
SS 3.25
TT 1.75
UU 1.25
VV 0.38
Fig.9
PP
OO
QQ
QQ
RR
FF
GG
HHHH
II
KKKK
SS
TT
TT
MM NN
UU
F
VV
Note: Dimensions below are in inches unless specied.

14 OPERATING INSTRUCTIONS
SURFACE MOUNT USING SINE KEYS
Mounting the HDL4 with keys requires the use of sine keys instead of
standard keys. They are available in several different sizes that are listed
on our website at www.kurtworkholding.com. The keys are sold in sets of
2 per package.
English Mounting:
The HDL4 can be properly located using (2) of the four English sine key
holes indicated by the QQ’s in Fig. 5 above. The HDL4 can be bolted down
using the four English 5/16” bolt holes indicated in Fig. 5 above by PP. The
HDL6 vise can also be clamped on the sides toe clamps.
Metric Mounting:
The HDL4 can be properly located using the two Metric sine key holes
indicated by the RR’s in Fig. 5 above. The HDL4 can be bolted down using
the four Metric M8 bolt holes indicated in Fig. 5 above by OO.
PROPER CHIP GUARD INSTALLATION AND USAGE
The chip guard is provided to keep chips out of the nut and screw assembly.
Fig.10
The center chip guard (Fig. 10-1) can be inserted so the key part
of the chip guard is inserted into the notched area of the vise bed.
This top chip guard will ride on top of the two side
chip guards during clamping.
The two side chip guards
(Fig. 10-2) should be placed so
that the rectangular hole in the chip
guards is placed over the rectangular peg
on the nut.

15
ITEM# PART # DESCRIPTION QTY.
1HDLM4-1 BODY, MACHINED 1
3HDLM6-3R-SA REAR NUT ASSEMBLY 1
4DL430-97 WIPER RING 1
5DL430-217 RETAINING RING 1
6HDLM4-3F-SA FRONT NUT ASEMBLY 1
7HDLM4-5 SCREW 1
10 DL430-8A COLLAR 1
11 HDLM4-35 CLAMP, STATIONARY JAW 2
12 D40-41 THRUST BEARING 1
13 DL400-42A THRUST WASHER 3
14 HDLM4-61 SPACER, THREADED 1
15 DL430-68 O-RING #28 1
16 DL430-91-P COLLAR, THREADED 1
20 DL430-128 O-RING #025 1
21 DL430-129 O-RING, METRIC 1
22 HDLM4-142 SPRING GUIDE 2
23 DL430-147A SNAP RING 1
24 HDLM4-191-SA PROTECTIVE PLUG ASSEMBLY 4
25 DL430-197 SPRING 8
26 HDLM4-209 CLAMP SLEEVE 2
27 HDLM4-212A HOLDING BLOCK 1
28 DL640-215 CLUTCH SPRING 3
29 DL400-218 END CAP 1
32 HDLM4-225 FRICTION CLAMP 1
33 DL430-231 RETAINING RING 1
34 HDLM4-248 STATIONARY CHIP GUARD 1
35 HDLM4-249 MOVABLE CHIP GUARD 2
36 HDLM4-197 SPRING, (RED) MANUAL 2
37 DL430-273A CLUTCH 1
38 HDL4-277 English Locating Pin, Stationary Jaw (ENGLISH) 2
38 HDLM4-277 Metric LOCATING PIN, STATIONARY JAW (METRIC) 2
39 HDLM4-311 SPRING, PRE-LOAD 1
40 HDLM4-313F STICKER, LEFT FRONT 1
41 HDLM4-313R LABEL, LEFT REAR 1
42 HDLM4-314R LABEL, RIGHT REAR 1
43 DL430-97 WIPER RING 1
44 07-0230 U-TYPE DRIVE SCREW #2 X 1/4 L 2
45 26-0050 SHCS M5 X .8 X 6MM LG 2
46 HDL4-18 English SHCS 5/16-18 UNC (ENGLISH) 2
46 HDLM4-18 Metric SHCS M8 X 1.25 (METRIC) 2
49 03-0141 English BHCS, 5/16-18 X 1/2 1
49 29-0168 Metric BHCS M8 X 1.25 X 12 (METRIC) 1
50 28-1094 SET SCREW, M4 X .7 X 6MM LG 1
51 04-0030 DOWEL PIN, 3/16 X .75 LG 1
HDL6 PARTS LIST
HDLM4 PARTS LIST

16
1620
27
15
10
25
12
13
37
28
7
51
39
32
50
46
26
38
34
35
1
49
33
21
22
36
6
45
14
43
23
5
4
3
29
44
HDLM4
11
24
ITEM NO. PART NO. DESCRIPTION QTY.
1
HDLM4-1
BODY, MACHINED 1
3
HDLM6-3R-SA REAR NUT ASSEMBLY 1
4
DL430-97
WIPER RING 1
5
DL430-217 RETAINING RING 1
6
HDLM4-3F-SA
FRONT NUT ASEMBLY 1
7
HDLM4-5
SCREW 1
10
DL430-8A
COLLAR 1
11
HDLM4-35
CLAMP, STATIONARY JAW 2
12
D40-41
THRUST BEARING 1
13
DL400-42A
THRUST WASHER 3
14
HDLM4-61
SPACER, THREADED 1
15
DL430-68
O-RING #28 1
16
DL430-91-P
COLLAR, THREADED 1
20
DL430-128
O-RING #025 1
21
DL430-129
O-RING, METRIC 1
22
HDLM4-142 SPRING GUIDE 2
23
DL430-147A
SNAP RING 1
24
HDLM4-191-SA
PROTECTIVE PLUG ASSEMBLY 4
25
DL430-197 SPRING
8
26
HDLM4-209
CLAMP SLEEVE 2
27
HDLM4-212A
HOLDING BLOCK 1
28
DL640-215 CLUTCH SPRING 3
29
DL400-218
END CAP 1
32
HDLM4-225
FRICTION CLAMP 1
33
DL430-231
RETAINING RING 1
34
HDLM4-248
STATIONARY CHIP GUARD 1
35
HDLM4-249
MOVABLE CHIP GUARD 2
36
HDLM4-197
SPRING, (RED) MANUAL 2
37
DL430-273A
CLUTCH 1
38
HDLM4-277
LOCATING PIN, STATIONARY JAW (METRIC)
2
39
HDLM4-311
SPRING, PRE-LOAD 1
40
HDLM4-313F
STICKER, LEFT FRONT 1
41
HDLM4-313R
LABEL, LEFT REAR 1
42
HDLM4-314R
LABEL, RIGHT REAR 1
43
DL430-97
WIPER RING 1
44
07-0230 U-TYPE DRIVE SCREW #2 X 1/4 L 2
45
26-0050
SHCS M5 X .8 X 6MM LG 2
46
HDLM4-18 SHCS M8 X 1.25 (METRIC)
2
49
29-0168
BHCS M8 X 1.25 X 12 (METRIC)
1
50
28-1094 SET SCREW, M4 X .7 X 6MM LG
1
51
04-0030 DOWEL PIN, 3/16 X .75 LG 1
HDL6 MECHANICAL DRAWING
HDLM4 MECHANICAL DRAWING
Fig.11

17
MAINTENANCE SCHEDULE
MAINTENANCE SCHEDULE
It is very important to perform regular maintenance on your Kurt vise to
ensure proper operation. Improper maintenance will result in poor vise
performance and may void your warranty.
Daily/ Weekly
1. Remove chips from surface of vise.
2. Visually inspect seals for damage and cleanliness.
3. Visually inspect for chip entrapments and remove when necessary.
4. Air-dry and apply rust inhibiting oil to the machined surface of the vise.
Monthly
1. Open the vise to the maximum opening.
2. Slide the Jaw slightly toward the stationary jaw and lift up to remove
the jaw from the “beak” of the nut.
3. Turn the movable jaw over and clean the inside cavity.
4. Remove chips, clean and apply a light coat of machine oil to the
machined surface of the following item:
a. Nut & Screw assembly (clean exposed threads on the screw)
b. Bed of vise (top of “rails”)
c. Inside of the vise between the center ways.
5. To re-assemble the movable jaw, press down on each of the quick
jaws to lock into place
6. Your vise is now ready for use. Open and close your vise to check for
proper operation. Center the part to be clamped in the vise and close.
Your parts should be centered from side to side to ensure proper
clamping.
3 to 6 months
1. On the HDLM4 (manual-long) model, start by removing the M8 button
head cap screw (#49- Fig. 11) located under the holding block and
threaded into the vise body. (See Fig. 7 for parts list)
2. Remove rear station movable jaw.

18 MAINTENANCE SCHEDULE
3. Place a 3.25” thick spacer in the front station, and start closing the vise
and this will drive the holding block (#27 in Fig. 11) out of the vise body.
4. Once the holding block is clear of the body, reverse the screw rotation,
so the spacer can be removed.
5. Remove the stationary and front movable jaws from the vise.
6. Remove the chip guards
7. The nut and screw assembly can now be slid out freely from the vise.
8. Thoroughly clean and oil the nut and screw assembly, vise body, and
jaws so there are no chips or debris left.
9. Now it’s time to reset the timing. Turn the rear nut counter clockwise
until you can feel resistance. Turn the nut back the other way until the
front and rear front are in line with one another. This sets the timing of
the front and rear nut. (See Fig. 12 below)
10. Slide the nut and screw assembly, rear nut rst, into the vise body up
to the holding block. See Fig. 11 for holding block identication.
11. Install stationary and rear movable jaws. Place a 3.25 spacer in the
rear station and start closing (clockwise rotation) the vise. You may
have to help get the friction clamp (rectangle piece with tapered ends)
started into the body by using a pair of pliers to help compress the
spring material.
12. Once the holding block is inside the body, reinstall the M10 button
head cap screw in the end of the body. Install front movable jaw.
13. Your vise is now ready to use.
MAINTENANCE SCHEDULE
Fig.12
4.125" 4.125"
Screw Shoulder
Reset Timing - Rotate Nuts until the 4.125" Spacing above is achieved

19
TROUBLESHOOTING TIPS
TROUBLESHOOTING TIPS
If properly maintained, the Kurt HDL4 Series vise will operate trouble free
for many years. In some cases it will be necessary to troubleshoot. Use the
information below to help in the process.
Problem: My vise turns hard.
Tip: As a new vise the brush seal could be stiff. Allow for break in of vise.
Tip: As a used vise, it could be lled with chips and threads could be
jammed. Properly clean and grease vise.
Problem: My vise will not turn in either direction.
Tip: The vise is jammed with debris. Disassemble and clean as needed.
Problem: My vise won’t hold tolerance.
Tip: You may be experiencing jaw lift from clamping too high or on one side
of the jaw. Lower the part in the vise jaw and clamp more material.
Problem: My vise is stiff when clamping on a part or is difcult to back off
a part.
Tip: The vise’s thrust bearing pack may need to be replaced.
Problem: My vise is not clamping at a high clamping force.
Tip: The vise’s thrust bearing pack may need to be replaced.
Problem : My vise is clamping at a low clamp force or it comes to a stop
when clamping on a part.
Tip: The vise’s clutch pin could be in what is called the over travel
position
Tip: To get your vise out of over travel, open your vise to it’s most open
position. This will reset the clutch pin and you may hear a click.

20 MAINTENANCE LOGNOTES
MAINTENANCE LOGNOTES: