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Description
DIAMETER DØ16 mm
THICKNESS b8.0 mm
MATERIALHSS
STANDARDDIN 851
T-slot cutter NFRs 16x8.0 mm DIN 851 HSS – dimensions and technical data
Tool specifications and slot size
| TECHNICAL DATA | |
|---|---|
| Tool type | T-slot cutter NFRs |
| Standard | DIN 851 |
| Cutting diameter D | Ø16 mm |
| Cutting section width b | 8.0 mm |
| Shank | straight |
| Shank length l | 40 mm |
| Overall length L | 60 mm |
| Number of cutting edges z | 6, straight teeth |
| Material | HSS |
| T-slot | 8 and 10 mm per DIN 650 |
T-slot cutter 16x8.0 mm for T-slots – NFRs construction
Disc, neck and operating method
The NFRs 16x8.0 mm T-slot cutter is a tool per DIN 851 for finishing T-slots in machine tool tables and workholding fixtures. The Ø16 mm disc, 8.0 mm thick, enters the slot along its axis and removes material from the sides.
Slot width and tool rigidity
The width of the lower portion of the slot matches the disc diameter, and its height matches the 8.0 mm thickness. The cutter works with its periphery and faces simultaneously, so dry cutting or compressed air works better on cast iron tables – emulsion mixed with graphite dust clogs the slot. In steel, apply plenty of coolant along the slot. The spindle speed for vc = 25 m/min is approximately 497 rpm.
T-slots 8 and 10 mm per DIN 650 – applications of the 16x8.0 mm cutter
Operation sequence and allowances
The dimensions of the NFRs 16x8.0 mm cutter match T-slots 8 and 10 mm per DIN 650 – the disc diameter falls within the dimensional range of the lower portion of the slot (14.5–16 mm), and its thickness falls within the height range of this portion (7–8 mm).
Operation sequence for cutting a T-slot
A T-slot is produced in three operations. First, machine a straight slot to full depth with an end mill or slotting cutter per DIN 327. Then widen the lower portion with this cutter, feeding it along the existing slot. Finally, machine a 45° chamfer at the slot opening. A T-slot cutter does not cut axially – the neck has no cutting edges, so entry into solid material breaks it.
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Application limitation
The tool works only in a previously machined guide slot; the neck, smaller in diameter than the disc, transmits all the cutting torque and is the weakest component. Clamping: collet ER-32 matched to the shank diameter. Uncoated HSS works in materials up to approximately 275 HB – cast iron and structural steel tables fall within this range.
NFRs cutter cutting data – spindle speed and feed for 16x8.0 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 | 398–597 | 55–136 |
| P Quenched and tempered alloy steel | 15–25 | 0.023–0.038 | 298–497 | 41–113 |
| M Stainless steel 304 / 316 | 9–18 | 0.023–0.043 | 179–358 | 25–92 |
| K Gray cast iron | 18–30 | 0.023–0.043 | 358–597 | 49–154 |
| N Aluminum, brass | 25–50 | 0.023–0.048 | 497–995 | 69–287 |
Calculating spindle speed and feed for structural steel
For structural steel, use vc = 25 m/min – at a diameter of 16 mm, this gives 497 rpm. Calculate the feed rate from vf = fz × z × n: at fz = 0.030 mm and 6 cutting edges, the result is 89 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 NFRs 16x8.0 mm – frequently asked questions
Slot selection, operation sequence, clamping
Frequently asked questions
The dimensions of the NFRs 16x8.0 mm cutter match T-slots 8 and 10 mm per DIN 650 – the disc diameter falls within the dimensional range of the lower portion of the slot (14.5–16 mm), and its thickness falls within the height range of this portion (7–8 mm).
An end mill or slotting cutter per DIN 327 – to the full slot depth and the width of its upper opening. Only then is the T-slot cutter used.
No. Woodruff keyseats per DIN 6888 are machined with cutters DIN 850 with different disc geometry – their diameter is 0.5 mm larger than the slot diameter in the shaft.
DIN 650 specifies a 45° chamfer at the slot opening (dimension n). It removes the sharp edge that would chip under the T-bolt head and hinder insertion of nuts.
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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 |
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