- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
Cutting diameter DØ15 H7hole 15.000–15.018 mm
MaterialHSShigh-speed steel (HSS)
StandardDIN 206hand reamer
Number of cutting edgesZ = 8straight flutes
Technical data for the 15 H7 hand reamer
dimensions, standard, and shank specifications
| Technical data | |
|---|---|
| Cutting diameter D | Ø15 H7 · hole 15.000–15.018 mm |
| Hole tolerance zone | H7 (+0.018 / 0 mm) |
| Type | Fixed-size shank-type hand reamer |
| Dimensional standard | DIN 206 |
| Material | HSS (high-speed steel) |
| Flute length l | 81 mm |
| Shank length l₁ | 58 mm |
| Overall length L | 163 mm |
| Number of cutting edges Z | 8 (straight flutes) |
| Shank / drive | Straight shank with square drive (for a tap wrench) |
Hand reamer 15 H7 NRTh — characteristics
construction, operation, and applications
Shank-type, fixed-size hand reamer 15 H7 NRTh (DIN 206) finishes cylindrical holes of diameter Ø15. It sizes them to the tolerance zone H7 (15.000–15.018 mm), removing only a few hundredths of a millimeter on the diameter; the result is an accurate hole with good roundness and a smooth wall.
The tool is made of high-quality Polish-made high-speed steel (HSS). The cutting section has straight flutes and 8 cutting edges that distribute cutting resistance over more edges — this improves hole roundness and reduces vibration compared with a two-lip drill. The extended, slightly tapered lead facilitates self-centering in the pilot hole, while the straight shank with square drive allows the reamer to be driven with a tap wrench in a smooth, steady motion.
This is a machining operation for finishing operation, not roughing: drilling produces a hole of grade IT10–IT11, whereas the reamer brings it to H7 and smooths the surface. Remember that the reamer follows the existing hole and cannot correct its misalignment — hence the need for perpendicular, concentric pilot drilling. The hand version has a longer tapered lead and more cutting edges than the machine version, making it easier to control with manual feed. It is sometimes used for machining reduction sleeves, in which the bore must meet a narrow H7 tolerance zone.
H7 tolerance and Ø15 hole accuracy
final tolerance zone of the machined hole
Ø15 mm hole size by tolerance grade (ISO 286)
| Designation | Hole Ø range [mm] | Deviations [mm] | IT tolerance grade |
|---|---|---|---|
| 15 H6 | 15.000 – 15.011 | +0.011 / 0 | 11 µm |
| 15 H7 | 15.000 – 15.018 | +0.018 / 0 | 18 µm this product |
| 15 H8 | 15.000 – 15.027 | +0.027 / 0 | 27 µm |
| 15 H9 | 15.000 – 15.043 | +0.043 / 0 | 43 µm |
| 15 H11 | 15.000 – 15.110 | +0.110 / 0 | 110 µm |
Your reamer produces tolerance grade H7 — finished hole Ø15.000–15.018 mm; the value is stated directly, without conversion from tables. A narrower tolerance zone means a more accurate hole. The reamed surface is smooth — typically Ra 0.4–1.6 µm, significantly better than after drilling alone (approx. 1.6–3.2 µm).
Manual machining — how to ream Ø15 H7
tap wrench operation, allowance and predrilled hole
Drive is transmitted by a tap wrench fitted over the square drive of the shank; rotate the reamer smoothly in one direction with light, even pressure. For a Ø15 H7 hole, allow a 0.2–0.3 mm allowance on diameter and drill a pilot hole Ø14.7 mm, then hand-ream to the final size. Maintain moderate, even pressure and do not reverse rotation while cutting. Use generous lubrication — cutting oil reduces cutting resistance and produces a finish of Ra 0.4–1.6 µm, better than the approximately 1.6–3.2 µm obtained by drilling.
▲Important: is a tool for manual machining — it is not intended for powered operation at high speeds. High-speed steel loses hardness above approx. 600 °C, so lubricate generously. Do not stop the reamer in the hole or reverse rotation — always withdraw it while continuing to rotate forward; withdrawing without rotation risks chip jamming, chipped cutting edges and a poorer hole finish.
Applications — workpiece materials
groups P1.2–P1.3 according to the material classification
✓Unalloyed and structural steel
✓Free-machining steel
✓Nonferrous metals — brass, bronze, copper
✓Light alloys and soft metals
▲Alloy steel — possible with generous lubrication and low speeds
✗Hardened steel and hardened stainless steel — beyond the capabilities of HSS
Frequently asked questions
It performs best in unalloyed and free-machining steels, as well as nonferrous metals and light alloys (P1.2–P1.3). Machine alloy steel carefully with generous lubrication. Do not machine hardened steels or hardened stainless steels — these exceed the capabilities of HSS.
The H7 zone for Ø15 mm is +0.018 / 0 mm, so the finished hole falls within 15.000–15.018 mm. The reamed surface is smooth (Ra 0.4–1.6 µm) — considerably finer than after drilling alone (approximately 1.6–3.2 µm).
Drill a Ø14.7 mm pilot hole perpendicular to the surface, leaving a stock allowance of 0.2–0.3 mm on the diameter. Then hand-ream to the final size with steady rotation and generous lubrication.
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.