CAT Tool Holders - CAT40, CAT50, CAT60

CAT Tool Holders – CAT40, CAT50, CAT60 2017-08-09T01:35:23+00:00

CAT-40-tool-holderA tool holder is a device that safely fixes the cutting tool in the spindle of the machine. The cutting tool is mounted into the holder and is tightened so it does not move during machining. One of the most common standards of tool holders is CAT.

CAT tools were developed by an American company Caterpillar® and are used in CNC machinery.

CAT Tool Holders will accept both Imperial and metric sized tools. CAT tapered tool holders are similar to BT tapered tool holders. The difference between CAT and BT is the flange style, thickness, and the thread for the pull stud is a different size.

CAT Tooling uses Imperial (English) thread pull studs (retention knobs).Well-known among professionals and widely used, CAT tooling can be found in different sizes: CAT30, CAT40, CAT45, CAT50, CAT60 etc. The number represents the size of taper holder, which is standardized by AMT (Association for Manufacturing Technology). The higher the number is, the bigger is the taper

CAT tools are also known as Caterpillar “V-flange”.  CAT tool holders are designed as flexible devices that will accommodate different tools within a certain range of sizes. They will accept both imperial and metric sized tools. They consist of a taper (shank) and a holding head (flange). The Morse taper (male part) fits in the spindle’s female coupling, providing precise positioning of the tool and ability to switch it quickly.

The holding head usually uses collets that hold the tool providing concentricity of the cutting tool, as they wrap the tool around the whole circumference. They are perfectly balanced, which is the reason they are so widely used by professionals.

If you are using a tool holder with a collet, do not forget to clean it from debris after each use! Parts of CAT tool holders are very durable and therefore are very safe and reliable. However, they still need to be stored in safe places as anything used for such precise work as CNC milling.

Cat50, Cat40, Cat30 ER Collet Chucks

ER collet chucks handle a wide range of machining jobs without having to buy new tool holders. Simply choose the right size collet for the job, set tool depth, and tighten the collet nut and pull stud to the proper torque using a torque wrench and tightening fixture.

Collets are available for: drilling, milling, coolant thru, and high-speed applications. Special “DNA” Dead Nuts Accurate collets are used for small drills (6mm and smaller) to maintain T.I.R. at those sizes.

Use “Power Coat” nuts to increase the holding power and safety of your tool holders. High holding power extends cutting tool life and improves surface finish.

CAT tool holders do not provide the possibility for spinning the tool inside the collet. Nevertheless, they fit for ATC – Automatic Tool Change, if this technology is supported by your machine.

CAT standard is produced by a variety of companies and is easy to acquire.

Dimensions:

ANSI B5.50 (from Kennametal catalog 7060)

Size

D1 D2 D3 Lgt F1 F2 min

A

G

40

1.750
(44.45)
2.500
(63.05)
1.750
(44.45)
2.687
(68.25)
0.750
(19.05)
1.375
(35.00)
0.125
(3.18)

5/8-11
thread

50

2.750
(69.85)
3.875
(98.41)
2.750
(69.85)
4.000
(101.60)
0.750
(19.05)
1.375
(35.00)
0.125
(3.18)

1-8
thread

60 4.250
(107.95)
5.500
(139.70)
4.250
(107.95)
6.375
(161.93)
0.750
(19.05)
1.500
(38.10)
0.125
(3.18)

1 1/4-7
thread

 

ISO 7388-1, DIN 69871, NFE 62540

Size

D1 D2 D3 max L F1 F2 min A G

40

44.45 63.55 50 68.4 15.9 35 3.2

M16

50 69.85 97.5 80 101.75 15.9 35 3.2

M24

 

Tool holders built in those two types are usually interchangeable, but there are few differences. Keep this in mind when choosing the right one.

cat-tool-holder-diagram

 

 

Cat Tool Holders: Bottom Line

Cat tool holders come in a variety of tapers and serve a vast number of purposes in the machine tooling industry. If you are not certain which type of Cat tool holders you should purchase for your lathe or CNC machine, please get in touch with us and enable our service representatives to assist you in making the ideal selection for your immediate machine tooling needs.

If you are in need of CAT 40 or CAT 50 tool holders or if you have CAT 40 or 50 that you want to get off your hands, please contact us using the form on this page.

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