Taco HR Series User Manual

Note: - Following parts are only available as an assembly.
(a) Body (1) with Part No. (2) and (45).
(b) Carrier (24) with Part No. (20), (21), (24A), (24B), (24C), (25) and bearing (26).
(c) Bearing (15) with Part No. (13).
(d) Chuck Nut (41) with Part No. (41A) and (41B).
Recommended Cutting Speed
Material Rake Angle
Cutting Speed
Speed feet/min
Type Tap. - HSS
Cutting Fluid
Steel carbon
0.10 – 0.50 % C
0.50 – 1.10 %C
10˚ - 15˚ 20 – 50
20 – 40
Oil emulsion
Or Sulphur-base oil
Steel-Chromium Nickel
10˚ - 15˚
10 – 30
Heavy Sulphur-base oil
Steel-Chromium-
Molybdenum
10˚ - 15˚ 10 – 30 Heavy Sulphur-base oil
Steel-stainless 10˚ - 15˚ 10 – 23
Heavy Chloride base oil
Sulphur-base oil
Monel Metal
10˚ - 15˚
10 – 23
Heavy Chloride base oil
Steel-cast 10˚ - 15˚ 15 – 50
Soluble oil or Sulphur-
base oil
Iron-cast
3˚ - 7˚
30 – 80
Dry or Soluble oil
Brass Drawn 10˚ - 15˚ 60 – 100
Soluble oil or light base
oil
Brass Cast 0˚ - 5˚ 60 – 100
Soluble oil or light base
oil
Bronze
5˚ - 10˚
35 – 60
Dry
Aluminum Drawn
20˚ – 30˚
60 – 100
Kerosene or Soluble oil
Aluminum Cast
10˚ – 15˚
60 – 100
Kerosene or Soluble oil
Duralumin
10˚ – 20˚
60 – 100
Dry
Bakelite
0˚ – 5˚
30 – 65
Dry
Plastics, Soft
20˚ - 30˚
60 – 70
Dry
The above information are subject to Tapping Speed instructions
(d) M20x2.50/MT5
-
-
49(d)HR4
49(d)HR4
(e) JT3/MT3
49(e) HR3
49(e) HR3
-
-
(f) JT3/MT4
49(f) HR3
49(f) HR3
-
-
(g) JT4/MT4
-
-
49(g)HR4
49(g)HR4
(h) JT4/MT5
-
-
49(h)HR4
49(h)HR4
50
Nut for Arbor
50HR3
50HR3
50HR4
50HR4
51.
Spindle
--
51 HRF3
-
51HRF4
52.
Pressure Block
--
52 HRF3
-
52HRF4
53.
Spring for Pressure Block
--
53 HRF3
-
53HRF4
54.
Lockring for Pressure Block
--
54 HRF3
-
54HRF4
55. Balls -- 55HRF3(3Nos) - 55HRF4(3Nos)
56. Knurling Sleeve -- 56 HRF3 - 56HRF4
57. Spring for Kn. Sleeve -- 57 HRF3 - 57HRF4
58. Lockring for Kn. Sleeve -- 58 HRF3 - 58HRF4

Taco HR Series Specifications

General

Brand	Taco
Model	HR Series
Category	Control Unit
Language	English