Polski 
- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
Diameter D Ø26 mm
Tolerance H726.000–26.021 mm
Morse taper MT3
Material HSS
Taper shank machine reamer Ø26 H7 for metal — technical data
NRTc — shank-type finishing reamer, Morse taper shank, HSS DIN 208
| Technical Data | |
|---|---|
| Cutting diameter D | Ø26 H7 (26.000–26.021 mm) |
| Morse taper | MT3 |
| Flute length l | 70 mm |
| Overall length L | 273 mm |
| Number of teeth Z | 10 |
| Type | NRTc — shank-type finishing reamer, Morse taper shank |
| Dimensional standard | DIN 208 |
| Material | HSS (high-speed steel) |
What H7 tolerance means for a diameter of 26 mm
| Class | Deviations [mm] | Dimension [mm] | |
|---|---|---|---|
| H6 | +0.013 / 0 | 26.000 – 26.013 | |
| H7 | +0.021 / 0 | 26.000 – 26.021 | SELECTED |
| H8 | +0.033 / 0 | 26.000 – 26.033 | |
| H9 | +0.052 / 0 | 26.000 – 26.052 |
The reamed hole falls within the tolerance zone 26.000–26.021 mm (ISO 286-2) — an accuracy level typical of dowel pin holes and sliding fits, among other applications.
Cutting data for the machine reamer Ø26 H7
Indicative values Ø26 mm Z = 10
| Material group (ISO 513) | Vc [m/min] | fz [mm/tooth] | n [rpm] Ø26 | f [mm/min] Z=10 |
|---|---|---|---|---|
| PStructural and carbon steel | 8–10 | 0.20–0.28 | 98 | 196 |
| MStainless steel | 2–3 | 0.20–0.28 | 24 | 48 |
| KCast iron | 3–5 | 0.20–0.28 | 37 | 74 |
| NAluminum and light alloys | 12–16 | 0.24–0.32 | 147 | 353 |
Vc — cutting speed, fz — feed per tooth (catalog values for HSS, selected for a diameter of Ø26 mm). Spindle speeds were calculated for the lower end of the range: n = (Vc × 1000) ÷ (π × D), feed rate per minute f = fz × Z × n for Z = 10. Start with the lower values and adjust according to the material and clamping rigidity.
You may also need: Cutting parameters calculator
Applications of the machine reamer Ø26 H7 for metal
Hole finishing to H7 tolerance
Machine reamer Ø26 H7 for metal with a taper shank Morse MT3 — NRTc shank-type finishing reamer according to DIN 208 made of high-speed steel (HSS) HSS. The taper shank provides secure, concentric mounting directly in the spindle socket or in a reduction sleeve — on both conventional machine tools and CNC machining centers. The tool has a ~45° lead-in chamfer at the tip for centered entry, while the guiding margins on the cutting edges keep the tool aligned with the hole axis.
The Morse taper shank reamer Ø26 H7 for metal removes the allowance left after drilling and brings the hole to its final size within the tolerance zone H7 (26.000–26.021 mm). The tool aligns the hole axis, improves roundness and cylindricity, and reduces surface roughness to approx. Ra 0.4–1.6 µm. 10 unequally spaced cutting edges reduce vibration and machining marks. Larger diameters are used for bearing and bushing seats and holes in machine housings, where dimensional stability over the entire length is essential. Suitable as a reamer for steel, cast iron, and nonferrous metals — HSS retains its hardness and wear resistance even at elevated cutting temperatures.
Workpiece materials
✓Structural and carbon steel
✓Gray cast iron
✓Aluminum and nonferrous alloys
▲Stainless steels — reduced cutting speed, generous coolant supply
✗Hardened steels above 45 HRC
Guidelines for correct reaming
- Pre-drilled hole Ø25.7 mm — stock allowance of 0.3 mm on the diameter.
- Drill the initial hole perpendicular to the surface and with minimal runout — a finishing reamer follows the existing hole and will not correct its misalignment.
- Use coolant (emulsion or cutting oil); cast iron can be machined dry.
- Withdraw the tool without reversing its rotation — reverse rotation damages the cutting edges.
Frequently asked questions — Ø26 H7 reamer
Drill a hole Ø25.7 mm — stock allowance of approx. 0.3 mm on the diameter. Too little allowance causes the material to be compressed rather than cut; too much overloads the cutting edges and reduces hole accuracy.
Use a Morse taper reduction sleeve — it allows the reamer to be mounted in a socket with a larger taper number without losing mounting concentricity.
The hole falls within the tolerance zone 26.000–26.021 mm, and surface roughness is approx. Ra 0.4–1.6 µm — this accuracy is sufficient for sliding fits and dowel pin holes.
Product accessories
Reviews
No customer reviews for the moment.
Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
Recommended for you
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.