These Cutter Heads are designed for cleaning straight and curved tubes as found in Boilers, Air Heaters, Economizers, etc. Cutter Heads are provided with three cutter wheels, one each of straight teeth, teeth cut right hand, teeth cut left hand, for quicker cleaning and prevent grooving of scale.
| Model No. | Tube I.D. | Head | Cutter Wheels Set of 3 Nos. | |
| inch | mm | Model | Model | |
| H-10 | 1.1/4 | 31.7 | HSRL-1 | HA-1 |
| H-11 | 1.3/8 | 35.0 | HSRL-1 | HA-1 |
| H-12 | 1.1/2 | 38.1 | HSRL-1 | HA-1 |
| H-13 | 1.5/8 | 41.3 | HSRL-2 | HA-2 |
| H-14 | 1.3/4 | 44.5 | HSRL-2 | HA-2 |
| H-15 | 1.7/8 | 47.6 | HSRL-2 | HA-2 |
| H-16 | 2 | 51.0 | HSRL-2 | HA-2 |
| H-17 | 2.1/8 | 54.0 | HSRL-2 | HA-2 |
| H-18 | 2.1/4 | 57.1 | HSRL-3 | HA-3 |
| H-20 | 2.1/2 | 63.5 | HSRL-3 | HA-3 |
| H-22 | 2.3/4 | 70.0 | HSRL-4 | HA-3 |
| H-24 | 3 | 76.2 | HSRL-4 | HA-3 |
| H-26 | 3.1/4 | 82.5 | HSRL-5 | HA-3 |
| H-28 | 3.1/2 | 88.9 | HSRL-5 | HA-3 |
| H-30 | 3.3/4 | 95.2 | HSRL-6 | HA-4 |
| H-32 | 4 | 101.6 | HSRL-6 | HA-4 |
These spring loaded, self expanding Cutter Heads are designed for rapid removal of hard and obstinate scale formation in straight tubes as found in Evaporators, Juice Heaters, etc. It consists of three bevel 4 straight cutter wheels 4 left cutter wheels and 4 right cutter wheels, fitted on three bridge type arms.
| Model No. | Tube I.D. | Cutter Wheels Set of 15 Nos. |
Spare Arms | |
| inch | mm | Model | Model | |
| HZ-10 | 1.1/4 | 31.7 | HZSRL-1 | HZA-1 |
| HZ-10A | 1.5/16 | 33.3 | HZSRL-1 | HZA-1 |
| HZ-11 | 1.3/8 | 35.0 | HZSRL-1 | HZA-1 |
| HZ-11A | 1.7/16 | 36.5 | HZSRL-1 | HZA-2 |
| HZ-12 | 1.1/2 | 38.1 | HZSRL-1 | HZA-2 |
| HZ-12A | 1.9/16 | 39.7 | HZSRL-1 | HZA-2 |
| HZ-13 | 1.5/8 | 41.3 | HZSRL-1 | HZA-2 |
| HZ-13A | 1.11/16 | 42.9 | HZSRL-1 | HZA-2 |
| HZ-14 | 1.3/4 | 44.5 | HZSRL-2 | HZA-3 |
| HZ-14A | 1.13/16 | 46.0 | HZSRL-2 | HZA-3 |
| HZ-15 | 1.7/8 | 47.6 | HZSRL-2 | HZA-3 |
| HZ-15A | 1.15/16 | 49.2 | HZSRL-2 | HZA-3 |
| HZ-16 | 2 | 51.0 | HZSRL-2 | HZA-3 |