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Tapered drill rod is suitable for small pneumatic rock drills or hydraulic rock drills for shallow hole drilling operations, and are generally made of H22 and H25 hexagonal hollow drill steel. The tapered drill rod needs to be matched with the taper drill bit for rock drilling, and It is usually used in rock drilling operations in quarries, coal mines, roadbeds, construction and other fields. Conventional taper angles for tapered drill rods are 7°, 11°and 12°.
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Shank H22×108mm, Hex 22, 7° | 400 | 1′3 3/4″ | 22 | 7/8" | 1.6 | H22-T7-400 |
| 800 | 2′ 7 1/2″ | 22 | 7/8" | 2.6 | H22-T7-800 | |
| 1000 | 3′ 3 3/4″ | 22 | 7/8" | 3.1 | H22-T7-1000 | |
| 1200 | 3′ 11 1/4″ | 22 | 7/8" | 3.7 | H22-T7-1200 | |
| 1500 | 4′ 11″ | 22 | 7/8" | 4.6 | H22-T7-1500 | |
| 1600 | 5′ 3″ | 22 | 7/8" | 5.2 | H22-T7-1600 | |
| 1800 | 5′10 7/8″ | 22 | 7/8" | 5.8 | H22-T7-1800 | |
| 2000 | 6′ 6 3/4″ | 22 | 7/8" | 6.5 | H22-T7-2000 | |
| 2400 | 7′ 10 1/2″ | 22 | 7/8" | 7.6 | H22-T7-2400 | |
| 3000 | 9′ 10 1/8″ | 22 | 7/8" | 9.2 | H22-T7-3000 | |
| 3200 | 10′ 6″ | 22 | 7/8" | 10.1 | H22-T7-3200 | |
| 3600 | 11′ 9 1/2″ | 22 | 7/8" | 11.4 | H22-T7-3600 | |
| 4000 | 13′ 1 1/2″ | 22 | 7/8" | 12.6 | H22-T7-4000 | |
| 4800 | 15′ 9″ | 22 | 7/8" | 15.1 | H22-T7-4800 | |
| 5600 | 18′ 4 1/2″ | 22 | 7/8" | 17.5 | H22-T7-5600 | |
| 6400 | 21′ | 22 | 7/8" | 20 | H22-T7-6400 | |
| 7200 | 23′ 7 1/2″ | 22 | 7/8" | 22.4 | H22-T7-7200 | |
| 8000 | 26′ 3″ | 22 | 7/8" | 24.6 | H22-T7-8000 | |
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Shank H25×108mm, Hex 25, 7° | 600 | 1′11 11/16″ | 25 | 1" | 2.8 | H25-T7-600 |
| 1220 | 4′ | 25 | 1" | 5.3 | H25-T7-1220 | |
| 1500 | 4′ 11″ | 25 | 1" | 6.2 | H25-T7-1500 | |
| 1600 | 5′ 3″ | 25 | 1" | 6.6 | H25-T7-1600 | |
| 1830 | 6′ | 25 | 1" | 7.7 | H25-T7-1830 | |
| 2000 | 6′ 6 3/4″ | 25 | 1" | 8 | H25-T7-2000 | |
| 2200 | 7′ 2 5/8″ | 25 | 1" | 8.8 | H25-T7-2200 | |
| 2400 | 7′ 10 1/2″ | 25 | 1" | 9.5 | H25-T7-2400 | |
| 2600 | 8′ 6 3/4″ | 25 | 1" | 10.7 | H25-T7-2600 | |
| 3200 | 10′ 6″ | 25 | 1" | 13 | H25-T7-3200 | |
| 3900 | 12′ 9 5/8″ | 25 | 1" | 15.8 | H25-T7-3900 | |
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Shank H25×159mm, Hex 25, 7° | 4200 | 13′ 9 3/8″ | 25 | 1" | 16.6 | H25/159-T7-4200 |
| 4700 | 14′ 10″ | 25 | 1" | 18.6 | H25/159-T7-4700 | |
| 5000 | 16′ 4 5/8″ | 25 | 1" | 19.8 | H25/159-T7-5000 | |
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Hex 25, 7°, no collar, L=total length | 600 | 1′ 11 11/16″ | 25 | 1" | 2.3 | NH25-T7-600 |
| 1000 | 3′ 3 3/4″ | 25 | 1" | 3.9 | NH25-T7-1000 | |
| 1400 | 4′ 7 5/8″ | 25 | 1" | 5.5 | NH25-T7-1400 | |
| 1800 | 5′ 10 7/8″ | 25 | 1" | 7.1 | NH25-T7-1800 | |
| 2200 | 7′ 2 5/8″ | 25 | 1" | 8.6 | NH25-T7-2200 | |
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Shank H22×108mm, Hex 22, 11° | 610 | 2' | 22 | 7/8" | 2.2 | H22-T11-610 |
| 800 | 2′ 7 1/2″ | 22 | 7/8" | 2.6 | H22-T11-800 | |
| 1220 | 4' | 22 | 7/8" | 4 | H22-T11-1220 | |
| 1525 | 5′ | 22 | 7/8" | 5 | H22-T11-1525 | |
| 1600 | 5′ 3″ | 22 | 7/8" | 5.1 | H22-T11-1600 | |
| 1830 | 6' | 22 | 7/8" | 5.8 | H22-T11-1830 | |
| 2000 | 6′ 6 3/4″ | 22 | 7/8" | 6.3 | H22-T11-2000 | |
| 2440 | 8' | 22 | 7/8" | 8 | H22-T11-2440 | |
| 3200 | 10′ 6″ | 22 | 7/8" | 10.2 | H22-T11-3200 | |
| 3600 | 11' 9 1/2" | 22 | 7/8" | 11 | H22-T11-3600 | |
| 3655 | 11′ 11 1/4″ | 22 | 7/8" | 11.6 | H22-T11-3655 | |
| 4000 | 13′ 1 1/2″ | 22 | 7/8" | 12.6 | H22-T11-4000 | |
| 4800 | 15′ 9″ | 22 | 7/8" | 15.1 | H22-T11-4800 | |
| 5600 | 18′ 4 1/2″ | 22 | 7/8" | 17.6 | H22-T11-5600 | |
| 6400 | 21′ | 22 | 7/8" | 20 | H22-T11-6400 | |
| 7200 | 23′ 7 1/2″ | 22 | 7/8" | 22.5 | H22-T11-7200 | |
| 8000 | 26′ 3″ | 22 | 7/8" | 24.9 | H22-T11-8000 | |
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Shank H22×108mm, Hex 22, 12° | 610 | 2' | 22 | 7/8" | 2.2 | H22-T12-610 |
| 610 | 2' | 22 | 7/8" | 2.2 | H22-T12-610 | |
| 800 | 2' 7 1/2" | 22 | 7/8" | 2.8 | H22-T12-800 | |
| 1220 | 4' | 22 | 7/8" | 4.1 | H22-T12-1220 | |
| 1525 | 5' | 22 | 7/8" | 5 | H22-T12-1525 | |
| 1830 | 6' | 22 | 7/8" | 6 | H22-T12-1830 | |
| 2000 | 6′ 6 3/4″ | 22 | 7/8" | 6.5 | H22-T12-2000 | |
| 2440 | 8' | 22 | 7/8" | 7.8 | H22-T12-2440 | |
| 3200 | 10′ 6″ | 22 | 7/8" | 10.2 | H22-T12-3200 | |
| 3660 | 12' | 22 | 7/8" | 11 | H22-T12-3660 | |
| 4000 | 13' 1 1/2" | 22 | 7/8" | 13 | H22-T12-4000 | |
| 4800 | 15′ 9″ | 22 | 7/8" | 15 | H22-T12-4800 | |
| 5600 | 18′ 4 1/2″ | 22 | 7/8" | 18 | H22-T12-5600 | |
| 6400 | 21′ | 22 | 7/8" | 20 | H22-T12-6400 | |
| 7200 | 23′ 7 1/2″ | 22 | 7/8" | 22 | H22-T12-7200 | |
| 8000 | 26′ 3″ | 22 | 7/8" | 25 | H22-T12-8000 | |
| Length | Diameter | Weight | Model No. | |||
| [mm] | [ft-in] | [mm] | [in] | [kg] | ||
Shank H25×159mm, Hex 25, 12° | 500 | 1′ 7 3/4″ | 25 | 1" | 2.7 | H25/159-T12-500 |
| 700 | 2′ 3 1/2″ | 25 | 1" | 3.5 | H25/159-T12-700 | |
| 1000 | 3′ 3 3/4″ | 25 | 1" | 4.7 | H25/159-T12-1000 | |
| 1400 | 4′ 7 5/8″ | 25 | 1" | 6.2 | H25/159-T12-1400 | |
| 1600 | 5′ 3″ | 25 | 1" | 6.8 | H25/159-T12-1600 | |
| 2000 | 6′ 6 3/4″ | 25 | 1" | 8.5 | H25/159-T12-2000 | |
| 2500 | 8′ 2 3/8″ | 25 | 1" | 10.4 | H25/159-T12-2500 | |
| 2600 | 8′ 6 3/4″ | 25 | 1" | 10.9 | H25/159-T12-2600 | |
| 3200 | 10′ 6″ | 25 | 1" | 13.2 | H25/159-T12-3200 | |
| 3300 | 10′ 9 5/8″ | 25 | 1" | 13.6 | H25/159-T12-3300 | |
| 3550 | 11′ 5 3/4″ | 25 | 1" | 14.6 | H25/159-T12-3550 | |
| 3800 | 12′ 5 5/8″ | 25 | 1" | 15.6 | H25/159-T12-3800 | |
| 4600 | 11′ | 25 | 1" | 18.7 | H25/159-T12-4600 | |
The tapered drill rod is an essential tool for drilling operations, featuring a unique tapered design at both ends that efficiently transmits the axial thrust of the jackhammer, enabling the tapered drill bit to deliver powerful breaking performance.
Manufactured from specially selected alloy steel, it undergoes precise forging, rigorous heat treatment, and surface strengthening processes to achieve high hardness and toughness.
In terms of performance, the tapered drill rod offers excellent power transmission efficiency and outstanding deep-hole drilling capabilities. Its secure and stable connection ensures it remains firmly in place. Whether in mining operations for breaking hard rock, foundation drilling in construction, or facility installation in road projects, it plays a crucial role. Widely applicable to various drilling scenarios, it provides reliable support for engineering projects.
Litian is a professional manufacturer focused on the production of rock drilling tools and excavation tools.
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