Korloy Internal Threading Boring Bar IR(L)H-C Dual Clamp

Internal threading boring bar with dual (screw + clamp) insert clamping.

Key features

Helix angle 1.5° for all holders
Right- and left-hand versions
Dual system: screw plus top clamp for rigid insert clamping
Insert sizes 16, 22, 27
Applicable inserts: IR/IL threading inserts
For bores smaller than DMIN use NFTT or MSB tools

Specifications

Clamping	Screw + clamp (dual)
Helix angle	1.5°
Stock	Yes

IRH20-16C		Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 24 \| Shank diameter DCON-MS (mm): 20 \| Bar diameter BD (mm): 20.0 \| Shank height H (mm): 18.0 \| Overall length LF (mm): 180 \| WF (mm): 13.4 \| LUX (mm): 50 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
ILH20-16C		Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 24 \| Shank diameter DCON-MS (mm): 20 \| Bar diameter BD (mm): 20.0 \| Shank height H (mm): 18.0 \| Overall length LF (mm): 180 \| WF (mm): 13.4 \| LUX (mm): 50 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Left \| Stock: Yes
IRH25-16C		Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 29 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 25.0 \| Shank height H (mm): 28.0 \| Overall length LF (mm): 250 \| WF (mm): 16.3 \| LUX (mm): 60 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
IRH25D-16C		Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 29 \| Shank diameter DCON-MS (mm): 25 \| Bar diameter BD (mm): 24.6 \| Shank height H (mm): 22.6 \| Overall length LF (mm): 200 \| WF (mm): 16.1 \| LUX (mm): 45 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
IRH32-16C		Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 36 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 19.6 \| LUX (mm): 60 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
IRH40-16C		Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 44 \| Shank diameter DCON-MS (mm): 40 \| Bar diameter BD (mm): 40.0 \| Shank height H (mm): 36.0 \| Overall length LF (mm): 300 \| WF (mm): 23.8 \| LUX (mm): 60 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
IRH25-22C		Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 32 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 25.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 17.4 \| LUX (mm): 60 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
IRH25D-22C		Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 32 \| Shank diameter DCON-MS (mm): 25 \| Bar diameter BD (mm): 24.6 \| Shank height H (mm): 22.6 \| Overall length LF (mm): 200 \| WF (mm): 17.2 \| LUX (mm): 45 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
ILH25D-22C		Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 32 \| Shank diameter DCON-MS (mm): 25 \| Bar diameter BD (mm): 24.6 \| Shank height H (mm): 22.6 \| Overall length LF (mm): 200 \| WF (mm): 17.2 \| LUX (mm): 45 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Left \| Stock: Yes
IRH32-22C		Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 39 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 21.5 \| LUX (mm): 60 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
IRH40-22C		Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 47 \| Shank diameter DCON-MS (mm): 40 \| Bar diameter BD (mm): 40.0 \| Shank height H (mm): 36.0 \| Overall length LF (mm): 300 \| WF (mm): 25.8 \| LUX (mm): 60 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
IRH32-27C		Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 40 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 22.4 \| LUX (mm): 60 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
ILH32-27C		Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 40 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 22.4 \| LUX (mm): 60 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Left \| Stock: Yes
IRH40-27C		Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 48 \| Shank diameter DCON-MS (mm): 40 \| Bar diameter BD (mm): 40.0 \| Shank height H (mm): 36.0 \| Overall length LF (mm): 300 \| WF (mm): 26.4 \| LUX (mm): 60 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
IRH50-27C		Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 58 \| Shank diameter DCON-MS (mm): 50 \| Bar diameter BD (mm): 50.0 \| Shank height H (mm): 45.0 \| Overall length LF (mm): 350 \| WF (mm): 31.4 \| LUX (mm): 75 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
IRH60-27C		Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 69 \| Shank diameter DCON-MS (mm): 60 \| Bar diameter BD (mm): 60.5 \| Shank height H (mm): 54.0 \| Overall length LF (mm): 400 \| WF (mm): 36.4 \| LUX (mm): 75 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
ILH60-27C		Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 69 \| Shank diameter DCON-MS (mm): 60 \| Bar diameter BD (mm): 60.5 \| Shank height H (mm): 54.0 \| Overall length LF (mm): 400 \| WF (mm): 36.4 \| LUX (mm): 75 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Left \| Stock: Yes

Boring BarsKorloy

17 product codes available in this family

Sourced direct from KoreaExport-ready supplyCompetitive pricing

RFQ List 0 Email about this

Need a different model, or a part not listed here? Send us your parts list →

Korloy Internal Threading Boring Bar IR(L)H-C Dual Clamp

Brand Korloy·Boring Bars

Available part numbers (17)

IRH20-16C, ILH20-16C, IRH25-16C, IRH25D-16C, IRH32-16C, IRH40-16C, IRH25-22C, IRH25D-22C, ILH25D-22C, IRH32-22C + 7 more — see full table ↓

How to order

Send the Korloy part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

RFQ List 0 →

View full details

Product codes & specifications

0 selected

RFQ List (0)

	Product code	Spec
	IRH20-16C	Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 24 \| Shank diameter DCON-MS (mm): 20 \| Bar diameter BD (mm): 20.0 \| Shank height H (mm): 18.0 \| Overall length LF (mm): 180 \| WF (mm): 13.4 \| LUX (mm): 50 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
	ILH20-16C	Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 24 \| Shank diameter DCON-MS (mm): 20 \| Bar diameter BD (mm): 20.0 \| Shank height H (mm): 18.0 \| Overall length LF (mm): 180 \| WF (mm): 13.4 \| LUX (mm): 50 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Left \| Stock: Yes
	IRH25-16C	Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 29 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 25.0 \| Shank height H (mm): 28.0 \| Overall length LF (mm): 250 \| WF (mm): 16.3 \| LUX (mm): 60 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
	IRH25D-16C	Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 29 \| Shank diameter DCON-MS (mm): 25 \| Bar diameter BD (mm): 24.6 \| Shank height H (mm): 22.6 \| Overall length LF (mm): 200 \| WF (mm): 16.1 \| LUX (mm): 45 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
	IRH32-16C	Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 36 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 19.6 \| LUX (mm): 60 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
	IRH40-16C	Insert IC (mm): 9.525 \| Min. bore diameter DMIN (mm): 44 \| Shank diameter DCON-MS (mm): 40 \| Bar diameter BD (mm): 40.0 \| Shank height H (mm): 36.0 \| Overall length LF (mm): 300 \| WF (mm): 23.8 \| LUX (mm): 60 \| Insert screw: ST16 \| Shim screw: STA16 \| Shim RH: ATI16 \| Shim LH: ATE16 \| Wrench: TW10P / TW15P \| Clamp: CTH16 \| Hand: Right \| Stock: Yes
	IRH25-22C	Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 32 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 25.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 17.4 \| LUX (mm): 60 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
	IRH25D-22C	Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 32 \| Shank diameter DCON-MS (mm): 25 \| Bar diameter BD (mm): 24.6 \| Shank height H (mm): 22.6 \| Overall length LF (mm): 200 \| WF (mm): 17.2 \| LUX (mm): 45 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
	ILH25D-22C	Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 32 \| Shank diameter DCON-MS (mm): 25 \| Bar diameter BD (mm): 24.6 \| Shank height H (mm): 22.6 \| Overall length LF (mm): 200 \| WF (mm): 17.2 \| LUX (mm): 45 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Left \| Stock: Yes
	IRH32-22C	Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 39 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 21.5 \| LUX (mm): 60 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
	IRH40-22C	Insert IC (mm): 12.7 \| Min. bore diameter DMIN (mm): 47 \| Shank diameter DCON-MS (mm): 40 \| Bar diameter BD (mm): 40.0 \| Shank height H (mm): 36.0 \| Overall length LF (mm): 300 \| WF (mm): 25.8 \| LUX (mm): 60 \| Insert screw: ST22 \| Shim screw: STA22 \| Shim RH: ATI22 \| Shim LH: ATE22 \| Wrench: TW20P \| Clamp: CTH22 \| Hand: Right \| Stock: Yes
	IRH32-27C	Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 40 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 22.4 \| LUX (mm): 60 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
	ILH32-27C	Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 40 \| Shank diameter DCON-MS (mm): 32 \| Bar diameter BD (mm): 32.0 \| Shank height H (mm): 29.0 \| Overall length LF (mm): 250 \| WF (mm): 22.4 \| LUX (mm): 60 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Left \| Stock: Yes
	IRH40-27C	Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 48 \| Shank diameter DCON-MS (mm): 40 \| Bar diameter BD (mm): 40.0 \| Shank height H (mm): 36.0 \| Overall length LF (mm): 300 \| WF (mm): 26.4 \| LUX (mm): 60 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
	IRH50-27C	Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 58 \| Shank diameter DCON-MS (mm): 50 \| Bar diameter BD (mm): 50.0 \| Shank height H (mm): 45.0 \| Overall length LF (mm): 350 \| WF (mm): 31.4 \| LUX (mm): 75 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
	IRH60-27C	Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 69 \| Shank diameter DCON-MS (mm): 60 \| Bar diameter BD (mm): 60.5 \| Shank height H (mm): 54.0 \| Overall length LF (mm): 400 \| WF (mm): 36.4 \| LUX (mm): 75 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Right \| Stock: Yes
	ILH60-27C	Insert IC (mm): 15.875 \| Min. bore diameter DMIN (mm): 69 \| Shank diameter DCON-MS (mm): 60 \| Bar diameter BD (mm): 60.5 \| Shank height H (mm): 54.0 \| Overall length LF (mm): 400 \| WF (mm): 36.4 \| LUX (mm): 75 \| Insert screw: ST27 \| Shim screw: STA27 \| Shim RH: ATI27 \| Shim LH: ATE27 \| Wrench: TW25L \| Clamp: CTH27 \| Hand: Left \| Stock: Yes

Need a different model, or a part not listed here? Send us your parts list →

Related products

All Cutting Tools →

Item added to your cart

Korloy Internal Threading Boring Bar IR(L)H-C Dual Clamp