Taco HR Series, Operator Instructions Manual

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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