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  • MF168 neutral 01 sku_01_HNR0005G06_clean
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HNR HSS or SNR/SNL spring-steel internal threading boring bar for IR inserts

Kortools
Main warehouse:
Select a variant to see available quantity pcs.
with VAT without VAT
Price €13.87

Shipping costs are not included in the price.

pcs.
Shipping time: 24 hours
Ask about the product

Select a product variant:

Individual variants may differ in price

Select HNR0005G06 — HSS — right-hand — Ø5 × 90 mm — 06IR HNR0006H08 — HSS — right-hand — Ø6 × 100 mm — 08IR HNR0008K08 — HSS — right-hand — Ø8 × 125 mm — 08IR HNR0008K11 — HSS — right-hand — Ø8 × 125 mm — 11IR HNR0010K11 — HSS — right-hand — Ø10 × 125 mm — 11IR HNR0012M11 — HSS — right-hand — Ø12 × 150 mm — 11IR HNR0013N16 — HSS — right-hand — Ø13 × 160 mm — 16IR HNR0014N16 — HSS — right-hand — Ø14 × 160 mm — 16IR HNR0016Q16 — HSS — right-hand — Ø16 × 180 mm — 16IR HNR0020R16 — HSS — right-hand — Ø20 × 200 mm — 16IR HNR0025S16 — HSS — right-hand — Ø25 × 250 mm — 16IR HNR2016R22-P62 — HSS — right-hand — Ø20 × 200 mm, neck Ø16 mm — 22IR HNR0020R22 — HSS — right-hand — Ø20 × 200 mm — 22IR HNR0025S22 — HSS — right-hand — Ø25 × 250 mm — 22IR HNR0032T22 — HSS — right-hand — Ø32 × 300 mm — 22IR SNR0020R22 — spring steel — right-hand — Ø20 × 200 mm — 22IR SNR0025S22 — spring steel — right-hand — Ø25 × 250 mm — 22IR SNR0032T22 — spring steel — right-hand — Ø32 × 300 mm — 22IR SNR0008K11 — spring steel — right-hand — Ø8 × 125 mm — 11IR SNR0010K11 — spring steel — right-hand — Ø10 × 125 mm — 11IR SNR0012M11 — spring steel — right-hand — Ø12 × 150 mm — 11IR SNR0013N16 — spring steel — right-hand — Ø13 × 160 mm — 16IR SNR0014N16 — spring steel — right-hand — Ø14 × 160 mm — 16IR SNR0016Q16 — spring steel — right-hand — Ø16 × 180 mm — 16IR SNR0020Q16 — spring steel — right-hand — Ø20 × 200 mm — 16IR SNR0025R16 — spring steel — right-hand — Ø25 × 200 mm — 16IR SNR0032S16 — spring steel — right-hand — Ø32 × 250 mm — 16IR SNL0008K11 — spring steel — left-hand — Ø8 × 125 mm — 11IR SNL0010K11 — spring steel — left-hand — Ø10 × 125 mm — 11IR SNL0012M11 — spring steel — left-hand — Ø12 × 150 mm — 11IR SNL0013N16 — spring steel — left-hand — Ø13 × 160 mm — 16IR SNL0016Q16 — spring steel — left-hand — Ø16 × 180 mm — 16IR SNL0020R16 — spring steel — left-hand — Ø20 × 200 mm — 16IR SNL0025S16 — spring steel — left-hand — Ø25 × 250 mm — 16IR
Click Available to show variants with 24h shipping


Opis produktu

HNR HSS and SNR / SNL spring-steel boring bars for internal threading

A family of boring bars for internal threading with replaceable IR inserts. Every variant is one individual boring bar with a defined shank diameter, overall length, hand, insert size and minimum bore diameter. The cutting insert is not included. After a variant is selected, the gallery displays its exact bilingual technical card.

The listing combines several body sizes in one selector so that code, geometry and commercial quantity remain connected. Always read the selected card rather than transferring a dimension from a nearby button.

Essential material distinction: HNR has a high-speed steel (HSS) body. SNR and SNL belong to the spring-steel family. We do not claim an exact 42CrMo or 60Si2Mn grade without conclusive evidence. HNR and SNR/SNL must not be compared only by diameter or visual similarity.

Application

The holder carries a replaceable internal-threading insert inside a bore. Selection begins with the available bore diameter and clearance for the body, then continues with the required shank, reach, IR insert size and pitch range. The selected shank diameter must match the machine holder or collet.

The family includes small holders for bores from 6.8 mm, standard 11IR and 16IR holders, and larger 22IR bodies. No single variant covers every diameter and pitch. Minimum bore diameter is a selection parameter in its own right and must not be inferred from shank diameter alone.

Check five items before ordering:
  1. right- or left-hand body,
  2. shank diameter and clamping compatibility,
  3. overall length and required reach,
  4. minimum bore diameter,
  5. IR insert size and pitch range.

Differences between HNR, SNR and SNL

FamilyBody materialHandRange in this listingKey condition
HNRHSS — high-speed steelrightØ5–32 mm shanks, 90–300 mm lengthsdo not substitute spring steel
SNRspring steelrightØ8–32 mm shanks, 125–300 mm lengthsmatch insert and bore data
SNLspring steelleftØ8–25 mm shanks, 125–250 mm lengthsconfirm left-hand operation

The family letters do more than identify a catalogue line. They distinguish body material and hand. SNL is left-hand; HNR and SNR are right-hand. A dimensionally similar SNR is not a substitute when the process requires SNL direction.

Within each family, body proportions, length, shank diameter, insert pocket and required bore clearance change. Each stock therefore uses its own exact card rather than a photograph from another code with a changed caption.

Workpiece material, thread form and required pitch also determine the insert. The holder and insert work as a system, but this listing supplies the boring bar only.

How to select a variant

1. Determine the hand. Choose HNR or SNR for a right-hand setup and SNL for a left-hand setup. Do not infer the hand only from a small thumbnail; it is stated in the variant name and card.

2. Check the shank diameter. It must fit the holder or collet. Changing insert size does not compensate for an incompatible shank.

3. Compare overall length with the required reach. A longer body reaches deeper, but it should be clamped with only the overhang required for the operation. The card states nominal length even when the shank intentionally continues beyond the image edge.

4. Check the minimum bore. This is the geometric lower limit stated for the variant. The actual process must also allow for thread form, entry, run-out and safe retraction.

5. Match insert and pitch. 06IR, 08IR, 11IR, 16IR and 22IR are not interchangeable sizes. The holder pitch range must cover the intended thread and the insert itself must have the correct form and pitch.

The variant selector is the source of the current combination. After clicking a code, check shank, length, insert, minimum bore, pitch and material on the displayed card. Do not select solely by the price of a neighbouring variant.

Selecting an IR insert

Insert size appears in both the variant name and its card. Small HNR bodies also use 06IR and 08IR; standard families include 11IR and 16IR; larger versions use 22IR. A different insert size is not compatible simply because it has a similar thread profile.

After size, select thread form, pitch, grade and execution for the workpiece and cutting conditions. These properties belong to the insert and do not change the body material. For example, HSS in an HNR card describes the boring bar body, not the replaceable insert.

Before installation, clean the pocket, inspect the clamping screw and seat the insert without chips beneath its support faces. Do not force an incompatible size or opposite-hand insert arrangement into the pocket.

The cutting insert is sold separately. Product images may show an insert to demonstrate the working arrangement, but the sale unit in this listing is one selected boring bar.

Dimensions and ranges

ParameterWhole-family rangeHow to read it
Shank diameterØ5–32 mmdiameter clamped in the machine holder
Overall length90–300 mmnominal length of the selected body
Minimum boreØ6.8–37 mmspecific to the selected SKU
Insert size06IR / 08IR / 11IR / 16IR / 22IRmust match the pocket
Pitch rangeup to 1.5; 1.75; 2.5; 3.5 mm; or 4–6 mmread the selected variant card

The table describes the complete listing, not one universal bar. Exact values appear in the selector and card after the SKU is chosen. Do not combine the minimum bore from one code with the length or insert pocket from another.

The special 16 mm neck variant has its own card. Neck diameter and clamped shank diameter can be different dimensions, so both fields must be read rather than reducing the code to “Ø16”.

Why is the body cropped at the image edge? Long boring bars are framed with the shank continuing beyond the card. This avoids making a 200–300 mm variant look like a short holder. The length printed on the card remains the binding value.

Installation and preparation

Clamp as much of the shank as practical and leave only the overhang required to reach the cutting area. Before running, verify that the body, insert, screw and pocket clear the bore entrance. Pay particular attention to the smallest diameter and to the retraction path after threading.

Tool-axis and cutting-edge height influence insert geometry. Perform a non-cutting clearance check after setup. A controlled move or manual spindle check can confirm direction, space and programmed position before a full-depth pass.

Cutting data must be selected for the insert, thread form, workpiece, clamping rigidity and machine. This listing does not prescribe one speed or pass strategy for every application. Long overhangs require especially careful stability assessment.

After use, clean the pocket and inspect its support faces. A damaged screw, contaminated seat or incorrectly positioned insert can cause runout and edge displacement even when the holder code is correct.

Scope of supply

You receive: 1 × boring bar in the selected variant.

The IR cutting insert is not included and is sold separately.

Increasing quantity in the basket adds more pieces of the same selected variant. Technical images do not indicate a two-holder set. Every current variant card shows one sale unit; when a source photograph contained two bodies, the card was prepared from a single exact variant.

Compare the selector code with your requirement before ordering. In particular, verify SNR/SNL hand, HNR versus spring-steel material, insert size and overall length. Machine tooling, surrounding equipment and inserts shown for context are not included unless separately added to the basket.

Frequently asked questions

Is the cutting insert included?
No. The listing supplies one boring bar; the IR insert is purchased separately.

Are HNR and SNR the same body in a different colour?
No. HNR uses an HSS body, while SNR belongs to the spring-steel family.

What is the difference between SNR and SNL?
SNR is right-hand and SNL is left-hand.

Will a 16IR insert fit an 11IR variant?
No. Insert size must match the stated pocket.

Is shank diameter the same as minimum bore?
No. They are separate values and both are stated for each SKU.

Why can I not see the end of a long shank?
The shank intentionally continues beyond the frame so the photograph does not imply a shorter body.

Do two tools in a source photograph mean a two-piece set?
No. Current variant cards show one piece and the sale unit is one selected holder.

Where is the exact combination shown?
In the selector button and the card displayed after selection, which pair code, material, hand, shank, length, insert, bore and pitch.

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