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Internal Laps.htm
External Laps.htm
Lapping PLates.htm
Lapping Compound.htm
Expanding Mandrels.htm
Diamond Hones.htm
Needle Eye Laps.htm
how_to_page.htm
downloads.htm
links.htm      

 

EXTERNAL LAPPING TOOLS

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External laps are used to  lap the outside diameter of cylindrical products, they are also used to dress internal laps.  The laps are made of a fine grain lapping iron and come with either straight or spiral expansion slots.   To use the External Lap the technician needs a External Lap Holder.  The lap is inserted into the holder and held from rotation by  a cup point set screw.   External Lap Holders provide the lap adjustment by means of a screw.  The holders are made of harden tool steel and then precision finished.

Key Benefits

  • External Laps are quickly adjusted.
  • External Laps are capable of holding tolerances to 5 millionth of an inch.
  • External Laps come in straight or spiral slots.

 

SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
1/16 O 1/2 1EX116 3/4 2EX116 1 1/2 3EX116
5/64 O 1/2 1EX564 3/4 2EX564 1 1/2 3EX564
3/32 O 1/2 1EX332 3/4 2EX332 1 1/2 3EX332
7/64 O 1/2 1EX764 3/4 2EX764 1 1/2 3EX764
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
1/8 1 1/2 1EX18 3/4 2EX18 1 1/2 3EX18
9/64 1 1/2 1EX964 3/4 2EX964 1 1/2 3EX964
5/32 1 1/2 1EX532 3/4 2EX532 1 1/2 3EX532
11/64 1 1/2 1EX1164 3/4 2EX1164 1 1/2 3EX1164
3/16 1 1/2 1EX316 3/4 2EX316 1 1/2 3EX316
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
13/64 2 1/2 1EX1364 3/4 2EX1364 1 1/2 3EX1364
7/32 2 1/2 1EX732 3/4 2EX732 1 1/2 3EX732
15/64 2 1/2 1EX1564 3/4 2EX1564 1 1/2 3EX1564
1/4 2 1/2 1EX14 3/4 2EX14 1 1/2 3EX14
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
17/64 3 1/2 1EX1764 3/4 2EX1764 1 1/2 3EX1764
9/32 3 1/2 1EX932 3/4 2EX932 1 1/2 3EX932
19/64 3 1/2 1EX1964 3/4 2EX1964 1 1/2 3EX1964
5/16 3 1/2 1EX516 3/4 2EX516 1 1/2 3EX516
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
21/64 4 1/2 1EX2164 3/4 2EX2164 1 1/2 3EX2164
11/32 4 1/2 1EX1132 3/4 2EX1132 1 1/2 3EX1132
23/64 4 1/2 1EX2364 3/4 2EX2364 1 1/2 3EX2364
3/8 4 1/2 1EX38 3/4 2EX38 1 1/2 3EX38
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
25/64 5 1/2 1EX2564 3/4 2EX2564 1 1/2 3EX2564
13/32 5 1/2 1EX1332 3/4 2EX1332 1 1/2 3EX1332
27/64 5 1/2 1EX2764 3/4 2EX2764 1 1/2 3EX2764
7/16 5 1/2 1EX716 3/4 2EX716 1 1/2 3EX716
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
29/64 6 1/2 1EX2964 3/4 2EX2964 1 1/2 3EX2964
15/32 6 1/2 1EX1532 3/4 2EX1532 1 1/2 3EX1532
31/64 6 1/2 1EX3164 3/4 2EX3164 1 1/2 3EX3164
1/2 6 1/2 1EX12 3/4 2EX12 1 1/2 3EX12
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
17/32 7 1/2 1EX1732 1 2EX1732 2 3EX1732
9/16 7 1/2 1EX916 1 2EX916 2 3EX916
19/32 7 1/2 1EX1932 1 2EX1932 2 3EX1932
5/8 7 1/2 1EX58 1 2EX58 2 3EX58
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
21/32 8 1/2 1EX2132 1 2EX2132 2 3EX2132
11/16 8 1/2 1EX1116 1 2EX1116 2 3EX1116
23/32 8 1/2 1EX2332 1 2EX2332 2 3EX2332
3/4 8 1/2 1EX34 1 2EX34 2 3EX34
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
25/32 9 1/2 1EX2532 1 3EX2532 2 3EX2532
13/16 9 1/2 1EX1316 1 3EX1316 2 3EX1316
27/32 9 1/2 1EX2732 1 3EX2732 2 3EX2732
7/8 9 1/2 1EX78 1 3EX78 2 3EX78
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
29/32 10 1/2 1EX2932 1 2EX2932 2 3EX2932
15/16 10 1/2 1EX1516 1 2EX1516 2 3EX1516
31/32 10 1/2 1EX3132 1 2EX3132 2 3EX3132
1 10 1/2 1EX1N 1 2EX1N 2 3EX1N
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
1 1/16 11 3/4 1EX1N18 1 1/2 2EX1N16 2 1/2 3EX1N16
1 1/8 11 3/4 1EX1N18 1 1/2 2EX1N18 2 1/2 3EX1N18
1 3/16 11 3/4 1EX1N316 1 1/2 2EX1N316 2 1/2 3EX1N316
1 1/4 11 3/4 1EX1N14 1 1/2 2EX1N14 2 1/2 3EX1N14
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
1 5/16 12 3/4 1EX1N516 1 1/2 2EX1N516 2 1/2 3EX1N516
1 3/8 12 3/4 1EX1N38 1 1/2 2EX1N38 2 1/2 3EX1N38
1 7/16 12 3/4 1EX1N716 1 1/2 2EX1N716 2 1/2 3EX1N716
1 1/2 12 3/4 1EX1N12 1 1/2 2EX1N12 2 1/2 3EX1N12
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
1 9/16 13 3/4 1EX1N916 1 1/2 2EX1N916 2 1/2 3EX1N916
1 5/8 13 3/4 1EX1N58 1 1/2 2EX1N58 2 1/2 3EX1N58
1 11/16 13 3/4 1EX1N1116 1 1/2 2EX1N1116 2 1/2 3EX1N1116
1 3/4 13 3/4 1EX1N34 1 1/2 2EX1N34 2 1/2 3EX1N34
1 13/16 13 3/4 1EX1N1316 1 1/2 2EX1N1316 2 1/2 3EX1N1316
1 7/8 13 3/4 1EX1N78 1 1/2 2EX1N78 2 1/2 3EX1N78
1 15/16 13 3/4 1EX1N1516 1 1/2 2EX1N1516 2 1/2 3EX1N1516
2 13 3/4 1EX2N0 1 1/2 2EX2NO 2 1/2 3EX2NO
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
2 1/8 14 1 1EX2N18 2 2EX2N18 3 3EX2N18
2 1/4 14 1 1EX2N14 2 2EX2N14 3 3EX2N14
2 3/8 14 1 1EX2N38 2 2EX2N38 3 3EX2N38
2 1/2 14 1 1EX2N12 2 2EX2N12 3 3EX2N12
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
2 5/8 15 1 1EX2N58 2 2EX2N58 3 3EX2N58
2 3/4 15 1 1EX2N34 2 2EX2N3/4 3 3EX2N34
2 7/8 15 1 1EX2N78 2 2EX2N78 3 3EX2N78
3 15 1 1EX3NO 2 2EX3NO 3 3EX3NO
SIZE HOLDER NO. LENGTH PART NO. LENGTH PART NO. LENGTH PART NO.
3 1/2 16 1 1EX3N12 2 2EX3N12 3 3EX3N12
3 3/4 16 1 1EX3N34 2 2EX3N34 3 3EX3N34
4 16 1 1EX4NO 2 2EX4NO 3 3EX4NO
4 1/4 16 1 1EX4N14 2 2EX4N14 3 3EX4N14

   ALL DIMENSIONS ARE IN INCHES

Special sizes are available from stock or in 5-7 days

EXTERNAL LAP HOLDERS

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HOLDER NUMBER LENGTH PART NUMBER LENGTH PART NUMBER LENGTH PART NUMBER
0 1/2 LH012 3/4 LH034 1 1/2 LH0NI2
1 1/2 LH112 3/4 LH134 1 1/2 LH1N12
2 1/2 LH212 3/4 LH234 1 1/2 LH2N12
3 1/2 LH312 3/4 LH334 1 1/2 LH3N12
4 1/2 LH412 3/4 LH434 1 1/2 LH4N12
5 1/2 LH512 3/4 LH534 1 1/2 LH5N12
6 1/2 LH612 3/4 LH634 1 1/2 LH6N12
7 1/2 LH712 1 LH71N 2 LH72N
8 1/2 LH812 1 LH8IN 2 LH82N
HOLDER NUMBER LENGTH PART NUMBER LENGTH PART NUMBER LENGTH PART NUMBER
9 1/2 LH912 1 LH91N 2 LH92N
10 1/2 LH1012 1 LH101N 2 LH102N
11 3/4 LH1134 1 1/2 LH111N12 2 1/2 LH112N12
12 3/4 LH1234 1 1/2 LH121N12 2 1/2 LH122N12
13 3/4 LH1334 1 1/2 LH131N12 2 1/2 LH132N12
14 1 LH141N 2 LH142N 3 LH143N
15 1 LH151N 2 LH152N 3 LH153N
16 1 LH161N 2 LH16N2 3 LH163N

ALL DIMENSIONS ARE IN INCHES

Special sizes are available from stock or in 5-7 days

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