Electric Motor Repair Electric Motor Maintenance-Martindale Products
Espa˝ola
Franšais
sales@martindaleco.com
phone:  216-521-8567
fax:       216-521-9476
Site Search:

CLICK HERE for Printable Version of this page.

Martindale Undercutting Saws

GENERAL
     Martindale Undercutting Saws and V-Cutters are available in High-Speed Steel of Tungsten-Carbide.  Both types are carefully designed as to tooth form, hollow grind, hardness, etc., and manufactured to close tolerances in our own plant.
     While used primarily for undercutting mica and slotting risers of commutators, Martindale Undercutting Saws and V-Cutters are also used for cutting steel, aluminum, plastics, and other materials not requiring set teeth. 
     Undercutting differs from ordinary machining in that, instead of shearing, it is a combination of crushing, grinding, and conveying.  Mica is very abrasive and varies in hardness, making necessary the very best design and production controls in the manufacture of undercutting saws.

HIGH-SPEED STEEL SAWS and V-CUTTERS
     These can be used on either portable or stationary equipment with spindle speeds of 1,500 to 5,000 r.p.m.
    (See Martindale Mica Undercutters for 16 Undercutters.)

 

Metric Sizes

25mm. O.D. Î 7mm. I.D. Saws and
V-Cutters in stock, along with
other metric sizes,
upon request.

H.S.S.  SAWS  (U-Slot)

     Illustrations at left and above; specifications below.  Saws stocked in these thicknesses:
.015"  .023"  .028"  .035"  .043"  .053"  .060"  .018" 
.025"  .030"  .038"  .045"  .055"  .063"  .020"  .026" 
.032"  .040"  .050"  .058"  .065" 

     Be Sure to Specify Thickness.

H.S.S. V-CUTTERS ("V"-Slot)

     Illustrations above; specifications below.  These cutters are all 0.045" thick and stocked with 40, 50, and 60 angles between cutting edges.  40 V-cutters are for thin mica, 50 for medium mica, 60 for thick mica.
     Be Sure to Specify Angle 40
, 50, or 60.

Type Number O.D. Hole No. Teeth Catalog Number
10-HS
9-HS
9-1/2-HS
32-HS
1/4"
9/32"
5/16"
3/8"
1/8"
1/8"
1/8"
1/8"
14
14
16
18
HSMS10
HSMS9
HSMS9.5
HSMS32
33-HS
12-HS
42-HS
16-HS
3/8"
7/16"
1/2"  1/2"
3/16"
1/8"
1/8"
3/16"
18
18
18
18
HSMS33
HSMS12
HSMS42
HSMS16
13-HS
14-HS
64-HS
65-HS
11/16"
23/32"
3/4"
3/4"
3/16"
5/16"
1/4"
5/16" 
28
32
22
22
HSMS13
HSMS14
HSMS64
HSMS65
74-HS
3-HS
75-HS
84-HS
7/8"
7/8"
7/8"
1"
1/4"
9/32"
5/16"
1/4"
24
24
24
28
HSMS74
HSMS3
HSMS75
HSMS84
4-HS
85-HS
86-HS
5-HS
1"
1"
1"
1-1/8"
9/32"
5/16"
3/8"
9/32"
28
28
28
28
HSMS4
HSMS85
HSMS86
HSMS5
96-HS
97-KHS
6-HS
105-KHS
1-1/8"
1-1/8"
1-1/4"
1-1/4"
3/8"
7/16"
9/32"
5/16"
28
28
32
32 
HSMS96
HSMS97K
HSMS6 HSMS105K
106-HS
108-KHS
116-HS
1-1/4"
1-1/4"
1-3/8"
3/8"
1/2"
3/8"
32
32
36
HSMS106 HSMS108K HSMS116
Type number O.D. Hole No. Teeth Catalog Number
42-VHS
17-VHS
13-VHS
15-VHS
1/2"
1/2"
11/16"
23/32"
1/8"
3/16"
3/16"
5/16"
12
12
14
14
HSMSV42
HSMSV17
HSMSV13
HSMSV15
64-VHS
65-VHS
74-VHS
3-VHS
3/4"
3/4"
7/8"
7/8"
1/4"
5/16"
1/4"
9/32"
14
14
18
18
HSMSV64
HSMSV65
HSMSV74
HSMSV3 
75-VHS
84-VHS
4-VHS
85-VHS
7/8"
1"
1"
1"
5/16"
1/4"
9/32"
5/16"
18
22
22
22
HSMSV75
HSMSV84
HSMSV4
HSMSV85
86-VHS
5-VHS
96-VHS
97-KVHS
1"
1-1/8"
1-1/8"
1-1/8"
3/8"
9/32"
3/8"
7/16"
22
24
24
24
HSMSV86
HSMSV5
HSMSV96
HSMSV97K
6-VHS
105-KVHS
106-VHS
108-KVHS
116-VHS
1-1/4"
1-1/4"
1-1/4"
1-1/4"
1-3/8"
9/32"
5/16"
3/8"
1/2"
3/8"
24
24
24
24
26
HSMSV6
HSMSV105K
HSMSV106
HSMSV108K
HSMSV116

Tungsten-Carbide Saws
& V-Cutters

See H.S.S. Mica Saws for "General" discussion of Undercutting Saws.

     The teeth of both saws and V-cutters have slight land to give strength to the cutting edge.  Saws are hollow-ground for clearance, V-cutters have ample radial relief.  When Carbide Saws are used on other equipment than our undercutters, steel supporting washers are recommended to reduce breakage.  Spindle speeds may vary from 3,000 to 12,000 r.p.m., depending on Saw O.D.  Martindale's Carbide Saw Blades are harder than High Speed Steel Saws, therefore more brittle and should not be subjected to applications where shock may shorten the service life. Use on rigid stationary equipment is recommended.
     See Undercutters for 9 Martindale Undercutters for the use with these saws: Close-Cut, Kut-Kwik, Utility, Bench-Type Model HV-3, Lathe-Type and Super Lathe Type, Heavy-Duty Bench-Type Model H-9, Industrial Model HA-2, and Model UL Lathe Mounted Automatic.

COMPOUND-LAND  SAWS

     The compound-land feature, sketched at right, is available on Tungsten-Carbide "U"-slots saw 9/16" O.D. and up (#18-TC through #116-TC) at a 30% premium in price.  Because of this feature, each tooth cuts only 50% of full slot width, resulting in better chip clearance, cooler operation and production increases of up to 60% over the square-tooth Saw.  To order, add "CL" to Catalog Number.  Minimum thickness 0.015".

SPECIALS
Your inquiries are invited for sizes not listed on the H.S.S. or Tungsten-Carbide Saw Pages

V-CUTTERS ("V"-Slot)
Illustrations Above; specifications below.
Thickness ranges as follows:
     1/2" O.D. from 0.030" to 0.045" thick
     3/4" - 1-3/8" O.D. from 0.030 to 0.065" thick

     Angles between cutting edges can be 40, 50, and 60. 40 V-cutters are for thin mica, 50 for medium mica and 60 for thick mica.
Be Sure to Specify Thickness and Angle, 40
, 50, or 60░.

Type
Number

O.D.

Hole
No.
Teeth
Catalog
Number
42-VTC
17-VTC
65-VTC
75-VTC
1/2"
1/2"
3/4"
7/8"
1/8"
3/16"
5/16"
5/16"
12
12
14
16
TUNSV42
TUNSV17
TUNSV65
TUNSV75
4-VTC
85-VTC
86-VTC
95-VTC
1"
1"
1"
1-1/8"
9/32"
5/16"
3/8"
5/16"
18
18
18
20
TUNSV4
TUNSV85
TUNSV86
TUNSV95
96-VTC
105-VTC
106-VTC
116-VTC
1-1/8"
1-1/4"
1-1/4"
1-3/8"
3/8"
5/16"
3/8"
3/8"
20
22
22
22
TUNSV96
TUNSV105
TUNSV106
TUNSV116

SAWS ("U"-slot)
    
Illustrations above and to the right; specifications below.
Thickness ranges as follows:
1/4" - 9/16"  O.D.  from .010" to .045" thick
5/8" - 1-3/8" O.D. from .010" to .065" thick

Type
 Number

O.D.

Hole
No.
Teeth
Catalog
Number
10-TC
9-1/2-TC
32-TC
33-TC
1/4"
5/16"
3/8"
3/8"
1/8"
1/8"
1/8"
3/16"
12
14
14
14
TUNS10
TUNS9.5
TUNS32
TUNS33
12-TC
42-TC
16-TC
18-TC
7/16"
1/2"
1/2"
9/16"
1/8"
1/8"
3/16"
1/4"
14
14
14
16
TUNS12
TUNS42
TUNS16
TUNS18
54-TC
64-TC
65-TC
75-TC
5/8"
3/4"
3/4"
7/8"
1/4"
1/4"
5/16"
5/16"
16
18
18
20
TUNS54
TUNS64
TUNS65
TUNS75
4-TC
84-TC
85-TC
86-TC
1"
1"
1"
1"
9/32"
1/4"
5/16"
3/8"
20
20
20
20
TUNS4
TUNS84
TUNS85
TUNS86
95-TC
96-TC
105-TC
106-TC
1-1/8"
1-1/8"
1-1/4"
1-1/4"
5/16"
3/8"
5/16"
3/8"
22
22
24
24
TUNS95
TUNS96
TUNS105
TUNS106
108-TC
116-TC
1-1/4"
1/38"
1/2"
3/8"
24
24
TUNS108
TUNS116
Home | Metal Working Mica Saws | Rotary Burs | Undercutters | Abrasives | Commutator Grinders | Electrical Test Equipment | Electrician's Hand Tools | Other Products