Yamawa Manufacturing Co.,Ltd. List of Products and Services

This document introduces the cutter for submarine gates. It provides a detailed explanation of how to use our "CS-G" cutter for submarine gates and important points during processing, using illustrations. 【Contents】 ■ Consultation ■ Response ■ Explanation ■ Important Points *For more details, please refer to the PDF document at the link below.

This document explains how to deal with the absence of standard taps for insert coils. It provides a detailed explanation of how to use helical cutters and thread mills. Additionally, a leaflet on helical cutters and thread mills is included. 【Contents】 ■ Consultation ■ Response ■ Explanation ■ Introduction of the leaflet *For more details, please refer to the PDF document at the link below.

This document explains the advantages of taps with a cool hole. It discusses whether switching to a tap with internal lubrication is effective in cases where the tap has been damaged due to chip clogging from a spiral tap, using the provided materials for explanation. 【Contents】 ■ Consultation ■ Answer ■ Explanation ■ Materials ■ Advice *For more details, please refer to the PDF document linked below.

This document contains measures regarding the "stop gauge failure (enlarged internal thread) trouble." In tapping operations using holders with tension/compression on a machining center, "stop gauge failure (enlarged internal thread) trouble" may occur, but visual inspection does not reveal any chipping or welding on the tap. The cause of the trouble is believed to be due to the tap's feed being either too fast or too slow. This phenomenon is explained with diagrams and countermeasures are provided. [Contents] ■ Consultation and answers regarding stop gauge failure (enlarged internal thread) trouble ■ Explanation and countermeasures for the phenomenon of the tap's feed being too fast or too slow *For more details, please refer to the PDF document at the link below.

This document introduces "roll taps." It includes recommended features and points to consider for those thinking about switching from cutting taps to roll taps. Please make use of it for your introduction. [Contents] ■ Consultation ■ Answers ■ Main features of roll taps (comparison with cutting taps) ■ Main points to consider when using cutting taps *For more details, please refer to the PDF document at the link below.

This document introduces "pipe taps." When machining Rc (PT) male threads with a pipe tapered tap, it discusses why "making the pilot hole tapered makes tapping slightly easier" and "issues that arise when the pilot hole is tapered." 【Contents】 ■ Consultation ■ Response ■ Explanation 1 - Pilot hole shape: When straight - Pilot hole shape: When tapered ■ Explanation 2 *For more details, please refer to the PDF document at the link below.

This document introduces consultations and responses related to "cutting taps." It includes practical examples and lifespan cases of carbide taps "N-CT FC," as well as a comparison of the number of threads and wear amounts of the engaged parts between carbide taps and HSS taps. Please make use of this document. 【Included Cases】 ■Consultation ■Response ■Explanation 　・Comparison of the number of threads and wear amounts of the engaged parts between carbide taps and HSS taps 　・Carbide tap: Practical examples and lifespan cases of N-CT FC *For more details, please refer to the PDF document at the link below.

This document introduces consultations and responses related to "cutting taps." It includes information on ultra-high-speed machining capable carbide taps "HFICT-P" and "HFICT-B," as well as the dimensional specifications of carbide hand taps for ultra-high-speed cast iron applications. Please make use of this document. 【Included Examples】 ■Consultation ■Response ■Explanation 　・Carbide hand taps "HFICT-P," "HFICT-B" 　・Dimensional specifications of carbide hand taps for ultra-high-speed cast iron applications *For more details, please refer to the PDF document linked below.

This document introduces consultations and responses related to "cutting taps." It includes the short chamfer hand tap "MG-HT" for magnesium alloy castings, as well as one-point advice on magnesium alloys. Please make use of this document. 【Published Examples】 ■Consultation ■Response ■Explanation 　・Short chamfer hand tap "MG-HT" for magnesium alloy castings 　・One-point advice *For more details, please refer to the PDF document at the link below.

This document introduces consultations and responses related to "cutting taps." It includes recommended grades for taps that can process 3B class internal threads, as well as the tolerance range for 3B class internal threads and the recommended GH class tolerance range for taps. Please make use of this document. 【Included Examples】 ■Consultation ■Response ■Explanation: Tolerance range for 3B class internal threads and recommended GH class tolerance range for taps ■Document: Recommended grades for ANSI standard unified internal thread 3B class processing taps (excerpt) *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries from customers. This document also includes detailed explanations. [Contents] ■Inquiry It seems that there are types of tapered pipe threads such as "PT," "R," and "Rc." Additionally, it appears that taps include "PT," "S-PT," and "Rc." What about dies...? I have no idea about tapered pipe threads at all. *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries received from customers. This document also includes detailed explanations. [Contents] ■Inquiry "I have taken on a job to process the internal thread of 'NPT 3/8'. I always have a 'PT 3/8' tap on hand, but can it be used as a substitute?" *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to the inquiries received from customers. This document includes detailed explanations. 【Contents】 ■Inquiry The drawing indicates "TM10X2" for the male thread section. I understand that it is a "30° trapezoidal thread," but I was informed by the retailer that the TM tap is no longer available on the market, and that the tap for the 30° trapezoidal thread would be Tr 10X2. Is it okay to process with a Tr 10x2 tap? Also, what diameter should the pilot hole be? *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries received from customers. This document also includes detailed explanations. 【Contents】 ■Inquiry The processing drawing stated "M10 L3 P1.5." How is this different from the standard "M10X1.5" screw? *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry I know that there are PF taps and PS taps for pipe parallel threads, but please tell me the differences and how to distinguish between them. *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry I was informed that the grade "P3" of YAMAWA's PO tap M4X0.7 is 20μm oversized compared to the standard grade "P2." Does this mean that if all taps increase by one number in the P grade, they will each become oversized by "20μm"? *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries received from customers. This document also includes detailed explanations. 【Contents】 ■Inquiry Please tell me the difference between pipe tapered threads "R" and "PT" and about the solid die "D PT" for pipe tapered threads. *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries received from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry It is stated that the screw standard is "PJ 1/2." What is the specification of this screw? *For more details, please refer to the PDF document linked below.

YAMAWA will respond to inquiries from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry What is the difference between American National Pipe Taper (NPT) and National Pipe Taper Fuel (NPTF)? *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to the inquiries received from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry Please tell me the difference between "Rp" and "PS" for pipe parallel threads and the appropriate pipe taps to use. *For more details, please refer to the PDF document linked below.

YAMAWA will respond to inquiries from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry This time, we have received a job for aircraft parts and plan to process the internal thread "1/4-28UNJF." What is the difference between the standard processed unified internal thread "1/4-28UNF" and "1/4-28UNJF"? *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries received from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry Please tell me the difference between pipe parallel threads "G" and "PF," and which pipe taps to use. *For more details, please refer to the PDF document at the link below.

YAMAWA will respond to inquiries from customers. This document also includes detailed explanations. 【Contents】 ■Inquiry Please tell me about the "taper" and "taper angle" of pipe tapered threads (PT, R, Rc) and American pipe tapered threads (NPT, NPTF). *For more details, please refer to the PDF document at the link below.