Polski 
- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
DIAMETER DØ16.5 mm
THICKNESS b3.0 mm
MATERIALHSS
STANDARDDIN 850 A
T-slot cutter 16.5x3.0 mm DIN 850 A HSS – dimensions and technical data
Tool specifications and key size
| TECHNICAL DATA | |
|---|---|
| Tool type | NFRh shank-type milling cutter |
| Standard | DIN 850 A |
| Cutting diameter D | Ø16.5 mm |
| Cutting section width b | 3.0 mm |
| Shank diameter d | Ø10.0 mm |
| Shank length l | 40 mm |
| Overall length L | 56.0 mm |
| Number of cutting edges z | 6, straight teeth |
| Material | HSS |
| Key size | 3x6.5 per DIN 6888 |
T-slot cutter for metal 16.5x3.0 mm – construction and Ø10.0 mm shank
Tool construction and application limits
T-slot cutter 16.5x3.0 mm DIN 850 A, type NFRh, is used for Woodruff keyseats in shaft ends. The Ø16.5 mm disc, 3.0 mm thick, plunges radially and reproduces an arcuate slot bottom with a radius of 8.25 mm in the shaft.
Cutting edges only on the disc – why the cutter cannot plunge axially
Six straight cutting edges work around the disc periphery and on both faces. The neck behind the disc has no cutting edges yet transmits all the cutting torque – the cutter must therefore be plunged radially only; axial entry, as with a drill, breaks the neck.
T-slot cutter or cutter for T-slots – what the standard says
Both names are used interchangeably in the trade, but the standards distinguish them. DIN 850 are cutters for Woodruff keyseats in shafts, while T-slots in milling machine tables per DIN 650 are cut with cutters DIN 851 of types NFRs and NFRg.
Applications of the 16.5x3.0 mm T-slot cutter – keyseats in shafts
Selecting the tool to match the key size
The slot produced by this cutter has a diameter of 16 mm and accepts a Woodruff key 3x6.5 per DIN 6888; the 0.5 mm difference between the tool and the slot falls within the standard's tolerance zone. Plunge the disc to 5.3 mm for series A or 5.6 mm for series B. The standard specifies this key size for shaft ends Ø12–17 mm, where torque is transmitted by another element – a taper or shrink fit – and the key locates the angular position.
▲
Application limitation
Clamping: collet ER-32 with an insert for Ø10.0 mm. The plain straight shank has no clamping flat – with the disc fully engaged, a drill chuck can release the tool and ruin the slot. Uncoated HSS works up to approximately 275 HB; above this, use the HSSE (HSS-Co5) version.
T-slot cutter cutting data – spindle speed and feed for 16.5x3.0 mm
Conservative values by ISO 513 groups
| Workpiece material | vc [m/min] | fz [mm/tooth] | n [rpm] | vf [mm/min] |
|---|---|---|---|---|
| P Structural steel up to 275 HB | 20–30 | 0.023–0.038 | 386–579 | 53–132 |
| P Quenched and tempered alloy steel | 15–25 | 0.023–0.038 | 289–482 | 40–110 |
| M Stainless steel 304 / 316 | 9–18 | 0.023–0.043 | 174–347 | 24–90 |
| K Gray cast iron | 18–30 | 0.023–0.043 | 347–579 | 48–149 |
| N Aluminum, brass | 25–50 | 0.023–0.048 | 482–965 | 67–278 |
Calculating spindle speed and feed for structural steel
For structural steel, use vc = 25 m/min – at a diameter of 16.5 mm, this gives 482 rpm. Calculate the feed rate from vf = fz × z × n: at fz = 0.030 mm and 6 cutting edges, the result is 87 mm/min. Chips exit through the same slot that supplies coolant, so direct the emulsion along the slot and maintain a generous flow.
T-slot cutter 16.5x3.0 mm – frequently asked questions
Selection, clamping and slot dimensions
Frequently asked questions
Woodruff key 3x6.5 per DIN 6888 – a segment with a diameter of 16 mm and a width of 3.0 mm.
DIN 6888 specifies the diameter of the arcuate keyseat in the shaft with a deviation of +0.5 mm. A cutter with a diameter of 16.5 mm produces a slot within this tolerance zone – this is a standard dimension, not a wear allowance.
To 5.3 mm in series A or 5.6 mm in series B per DIN 6888. Select the series together with the keyway depth in the hub – values from the two series must not be mixed.
Yes, with reduced cutting parameters: vc 9–18 m/min and cooling with an emulsion containing an EP additive. Stainless steel work-hardens under the cutting edge, so maintain a constant feed without dwelling in the slot.
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
Viewed products
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.