Qing Yang® produces a 4 1/2 cut off disc in 115×3.0×22.2mm specification for buyers who need a heavier, more stable option than an ultra-thin 1.6mm wheel. This T42 depressed center 4.5 inch cut off wheel is designed for everyday metal cutting on 115mm angle grinders where side stability, disc life and operator comfort are as important as cutting speed.
Compared with our 115×1.6×22.2mm precision disc, the 3.0mm cut off wheel carries more abrasive and offers better control in rougher site conditions, making it a practical choice for contractors, workshops and distributors who want a durable 4 1/2 inch cutting disc in their 115mm range.
Performance features of the 4 1/2 cut off disc
- T42 depressed center structure for stable handling
The T42 concave design raises the disc above the flange and allows a more comfortable grinding-style hand position on the 115mm angle grinder, improving control when cutting profiles, pipes and heavy sections.[page:3] - 3.0mm heavy duty cutting profile
With 3.0mm thickness, this 4.5 inch cut off wheel is thicker than our ultra-thin 1.6mm model and is aimed at general workshop and site cutting, where a stiffer wheel reduces vibration and is less sensitive to slight side pressure during use. - Double fiberglass reinforcement for 80 m/s safety
Two layers of fiberglass mesh in the resin bond allow the 115×3.0×22.2mm disc to run at 80 m/s with a maximum operating speed of 13,300 RPM, meeting EN 12413 and OSHA safety requirements for 4 1/2 inch cutting discs. - Metal-focused abrasive blend
The aluminum oxide formulation is tuned for carbon steel, alloy steel and stainless steel, giving a consistent cut on pipes, structural sections and general metal fabrications without burning the workpiece when used at the correct feed rate.
Typical applications for the 115×3.0×22.2mm metal cutting wheel
Pipe cutting and steel fabrication
This 4 1/2 inch cut off disc is used on 115mm angle grinders for cutting carbon steel and stainless steel pipes, angles, channels and flat bar in fabrication shops and on construction projects. The 3.0mm profile offers a good balance between cut quality and wheel life when operators are cutting repeatedly through thicker sections.[page:3]
Maintenance and repair tasks
In maintenance workshops and repair teams, the 115mm cutting wheel is a workhorse for trimming bolts, brackets, guard plates and welded components, where a more robust wheel is preferred over ultra-thin discs that are optimized for precision only.
Alloy steel and stainless steel cutting
The T42 4.5 inch metal cutting disc is suitable for alloy steels and stainless steels used in machinery, railings and equipment frames. Its reinforced structure and 3.0mm thickness give operators confidence when cutting harder materials on high‑speed 4 1/2 inch grinders.
Technical specifications – 4 1/2″ cut off disc 115×3.0×22.2mm
| Параметр | Значение |
|---|---|
| Тип продукта | 4 1/2 cut off disc / 115mm cutting wheel |
| Design | T42 depressed center metal cut off wheel |
| Metric size | 115×3.0×22.2mm |
| Imperial size | 4.5″ x 1/8″ x 7/8″ |
| Толщина | 3.0mm heavy duty cutting profile |
| Safe line speed | 80 m/s |
| Максимальная рабочая скорость | 13 300 об/мин |
| Abrasive | Оксид алюминия |
| Bond & reinforcement | Resin bond with double fiberglass mesh |
| Certification | EN 12413 / OSHA compliant |
| Recommended tool | 115mm angle grinder with 22.2mm spindle |
OEM and B2B supply for 4 1/2 inch cutting discs
As a cutting disc manufacturer in China, Qing Yang® supplies the 4 1/2 cut off disc 115×3.0×22.2mm as the heavy duty option within our 115mm range, alongside the 115×1.6×22.2mm ultra‑thin T41 model. This allows distributors to offer both a fast‑cutting precision wheel and a more robust 3.0mm wheel from one source.
For new OEM and private label projects, the typical minimum order quantity for the 4.5 inch 3.0mm cut off wheel is around 100,000 pieces, including custom printing and packaging to match your cutting wheel brand. Mixed containers are supported, so buyers can combine 4 1/2 inch cutting discs with 5 inch, 6 inch or 7 inch metal cutting wheels in the same shipment, reducing per‑SKU stock pressure while building a complete angle grinder disc line.
Часто задаваемые вопросы
For heavier sections, rough site conditions or operators who tend to apply side pressure, the 3.0mm T42 disc is usually the safer and more economical choice than an ultra‑thin 1.6mm wheel.
For many years 3.0mm was the standard thickness for portable cut off wheels because it offers enough strength to handle lateral loads while still cutting efficiently, which is why we position this 4 1/2 cut off disc as the heavy duty option in the 115mm range.
The 115×3.0×22.2mm cut off disc is aimed at daily workshop and construction cutting where users are repeatedly cutting pipes, angles, channels and flat bar in carbon steel or stainless steel.
Compared with ultra‑thin wheels that excel on thin material and precision cuts, this 3.0mm disc gives more stability in the kerf and better life on thicker sections and structural steel, making it a good fit for fabrication, maintenance and site contractors who value durability over minimum kerf width.
A T42 depressed center disc has a recessed hub that lets the wheel sit higher above the flange and guard, so the operator can work at a slight angle with better clearance when cutting profiles or in tight areas.
This design is traditionally used for heavier duty cutting and light grinding because it offers more versatile approach angles and helps the user keep a comfortable hand position on the angle grinder during longer cuts.
Like other quality 115mm cutting discs, the 4 1/2 inch 3.0mm wheel is designed to run at a safe line speed of 80 m/s with a maximum operating speed of 13,300 RPM on standard angle grinders.
It should be used with a correctly matched guard and flanges in accordance with EN 12413 and tool manufacturer recommendations, and operators should always allow the disc to reach full speed, avoid excessive side loading and replace discs that show visible damage.
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