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This section provides an overview for straight reamers as well as their applications and principles. Also, please take a look at the list of 13 straight reamer manufacturers and their company rankings. Here are the top-ranked straight reamer companies as of April, 2025: 1.RedLine Tools.
Table of Contents
A straight reamer is a type of blade used in reaming, a process for high-precision hole finishing. It is similar to a spiral reamer, which serves the same purpose.
Reaming creates holes with predetermined dimensions and minimal diameter discrepancies. This is achieved through high-precision finishing after drilling the initial hole.
These reamers are suitable for manual (hand) reaming or machine-assisted reaming.
Reamers vary in material, shank size, tooth length, and cost, ranging from a few dollars to 150 dollars. Recently, reamers are often available at relatively low prices on auction sites.
For instance, when using a hand reamer, one first drills a pre-hole, ensuring the dimensions match the intended finished hole. It is advisable to consider the reamer diameter and workpiece material when selecting the finishing allowance.
The reamer is then passed through this pre-hole for high-precision finishing. To ensure straight passage, it is sometimes necessary to use tools like a square to keep the reamer perpendicular to the workpiece.
Hand reaming requires experience, as consistent rotation speed and feed rate are crucial for quality finishing.
Straight reamers resemble drills with straight, lengthwise teeth. High-precision finishing is achieved by initially drilling a hole slightly smaller than the desired finished size and then passing the reamer through to remove the excess material, resulting in an accurately finished hole.
Compared to drilling, the allowance and blade shape of a reamer allow for a more accurate finish. However, there are factors to consider, such as the potential for slight surface cracking due to the straight blade. This can be influenced by clamping force, pre-drilled hole quality, cutting oil, and the rotation and feed rate. Manual machining requires significant experience.
The tooth shape of spiral reamers, used in similar applications differs. Spiral reamers have twisted teeth, producing facets directed from the tip of the machining section toward the hole's entrance in the workpiece.
When selecting a new straight reamer, consider a variety of products from different manufacturers, ensuring compatibility with the workpiece to be machined.
*Including some distributors, etc.
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Founded in 1985, with headquarter in Rowley, Massachusetts, United States, Harvey Tool Company is a manufacturer and supplier of carbide end mills and cutting tools for the metalworking industry. The company offers Miniature End Mills, Material Specific End Mills, Tool Holders, and, Thread Mills. Besides these products, they also provide hole-making services that have applications in various industries related to metalworking. The company provides metric tooling options for Miniature End Mills, and offers new diameters, reaches, angles, and coatings of tools that are needed by the metalworking industry.
Tri-Angle Precision Reamers, established in 1989 and headquartered in Milton, Vermont, is a manufacturer of precision reamers and cutting tools. The company specializes in producing reamers for industries including aerospace, automotive, and medical. Its primary products encompass high-speed steel chucking reamers, cobalt chucking reamers, dowel pin reamers, and reamer sets. These tools find applications in precision machining and finishing processes. The company also adheres to conflict mineral policies aligned with buyers’ policies, ensuring legal compliance and communication with sellers’ sub-suppliers.
Gammons Hoaglund Company is a manufacturer of Reamers in Connecticut since 1918. The company manufactures high-speed steel reamers of varying sizes, flutes, diameters, and shank types which can be used in a lathe machine, milling machine, or drill press. The variety includes Chucking & Stub Reamers which are used for general-purpose cutting tools and the Morse Taper, and Taper Pin Reamers create, enlarge, or finish holes for taper pins whereas the Die Maker Reamers help with die sets and punches. The company also offers industry-specific reamers that have applications in musical instruments, marine propellers, automotive parts, and many welding applications.
RedLine Tools is a manufacturer and distributor of cutting tools and tooling solutions headquartered in Minnesota, USA. The company manufactures precision tools for various industries, including manufacturing, machining, and metalworking. The company's product lineup includes end mills, drill bits, taps and dies, reamers, milling cutters, and tool holders. These products are used in metalworking applications, including machining steel, aluminum, and other metals. The company also offers various accessories that complement its cutting tools.
NIKKEN KOSAKUSHO WORKS, LTD.- was founded in 1958 and is a manufacturer of machine tool attachments and industrial tools based in Daito, Osaka, Japan. The company manufactures various products such as NC tooling system, CNC rotary table, carbide PF radical mill reamer, conventional milling chuck, and tool ID management system. The products are distributed to various countries such as United Kingdom, France, Italy, Germany, and Sweden. The company has participated in various exhibitions, including Mechatronics Technology Japan (MECT) 2023.
DIC TOOLS, established in Patiala, Punjab in 2012 is a manufacturer of cutting tools which include HSS Cutting Tools and Gear Cutting Tools. Their product portfolio includes solid carbide end mills used for precise milling, high-speed steel (HSS) and HSS-Co drills, high-speed steel (HSS) and HSS-Co drills used in turning and milling operations, and boring bars and tool holders for hole machining. The company serves industries such as Electronics and Semiconductors, Metalworking and Fabrication and Precision Engineering.
Eikosha Co. Ltd., founded in 1950 and headquartered in Ota-ku, Tokyo, is a manufacturer of precision cutting tools. The company specializes in producing reamers, cutters, and end mills with a portfolio of over 40,000 standard tools. It provides customized tool services, creating cutting tools from CAD prints or sketches to meet specific client needs. Its capabilities also include crafting tools from carbide and HSS, ensuring precision and repeatability for every design. Its product lines, such as the Eikosha series, cater to various industrial machining applications. The company exports globally, reaching markets across Europe, Asia, and the Americas.
Titan USA is based in West Springfield, Massachusetts, USA, and is a manufacturer of cutting tools originally established in 1972 before being acquired by Harvey Performance Company in 2020. The company’s products include steel cutting tools for standard cutting processes in metalworking operations, and carbide cutting tools for precision machining processes. It also offers cobalt cutting tools for fine machining processes, such as milling or drilling. The company is ISO 9001:2008 and ISO 14001:2004-certified, and mainly serves clients in thye industrial manufacturing sector.
HANNIBAL CARBIDE TOOL, established in 1969, is located in Hannibal, Missouri, USA, and is a manufacturer of advanced carbide cutting tools. The company offers a diverse array of products, including end mills, reamers, and drills that offer optimal hardness, wear resistance, and precision, resulting in extended tool life and superior machining performance. Industries such as aerospace, automotive, and manufacturing rely on these tools for accurate and efficient metalworking processes. Its specialization in carbide tooling allows for the creation of intricate shapes and sizes, enabling customization for specific applications.
MORSE Cutting Tools, founded in Novi, Michigan, in 1864 is a manufacturer of cutting tools, superior endmills and drills. The company's product portfolio includes indexable inserts, including carbide, ceramic, and CBN inserts, used in turning, milling, and threading operations, solid carbide end mills, and boring bars and toolholders. The company serves markets including automotive, aerospace, medical, glass mold, and plastics. The company provides services including national distribution, product selection, custom tooling services, repair and customer service.
Drill America, founded in 1923 in New York City, is a family-owned and operated manufacturer and supplier of contactor and industrial cutting tools. The company supplies tens of thousands of different cutting tools and instruments to distributors across the US, Canada, and other parts of the world. The company’s most popular products are drills and reamers, dies and taps, end mills, countersinks, and carbide buns. Industries catered to include Manufacturing, Hand, Power, and Lawn-care Tools.
Ranking as of April 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | RedLine Tools |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the straight reamer page as of April 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 62.5% |
|
Japan
|
2 | 25.0% |
|
India
|
1 | 12.5% |
166 products found
166 products
Fuji Seiko Co., Ltd.
210+ people viewing
Standard Response
■ Stable and excellent finishing accuracy even in interrupted cutting High precision with "excellent guiding performance" + "PCD cutting edge" and ...
Solid Tool Co., Ltd.
120+ people viewing
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■What is carbide reamer? Carbide reamers are used to more precisely finish pre-machined pilot holes. Reamers are the most widely used for high-prec...
Fuji Seiko Co., Ltd.
170+ people viewing
Standard Response
■Excellent finishing accuracy even in deep hole machining due to outstanding balance shape Ideal for finishing deep holes with "excellent guiding p...
Fuji Seiko Co., Ltd.
170+ people viewing
Last viewed: 46 minutes ago
Standard Response
■Carbide reamer series for cast iron and steel boasting excellent finishing accuracy Achieves high precision and high efficiency machining with "6 ...
Rinos Co., Ltd.
700+ people viewing
Last viewed: 1 day ago
Very Fast Response
■ Characteristics ・ It is possible to remove a wide range of materials, from soft materials such as copper, aluminum, and soft steel, to cast iron...
10 models listed
Rinos Co., Ltd.
680+ people viewing
Last viewed: 5 hours ago
Very Fast Response
■ Characteristics ・ It is possible to remove a wide range of materials, from soft materials such as copper, aluminum, and soft steel, to cast iron...
10 models listed
Rinos Co., Ltd.
940+ people viewing
Last viewed: 8 hours ago
Very Fast Response
■ Characteristics ・ It is a replacement blade type (HSS) rama that can easily adjust the blade dimensions. * There are other part numbers.
10 models listed
TOKYO DIAMOND TOOLS MFG.CO.,LTD.
330+ people viewing
Last viewed: 14 hours ago
Standard Response
It is used in a wide range of fields such as plastic, aluminum alloy, carbon material, ceramics, etc., and a good finish that can not be obtained w...
Engineer
410+ people viewing
Last viewed: 8 hours ago
5.0 Company Review
■ Features ･ A taperedmer with excellent sharpness and durability. ･ Because it is a T type, it can be processed with light force. ･ It can be used...
Engineer
720+ people viewing
Last viewed: 4 hours ago
5.0 Company Review
■ Features ･ A taperedmer with excellent sharpness and durability. ･ Because it is a T type, it can be processed with light force. ■ Use ･ To expa...
4 models listed
Omi Industries Co., Ltd.
180+ people viewing
Last viewed: 1 day ago
Standard Response
Φ accuracy “H7” and surface roughness “3S” with one-shot machining ■Features ・Excellent in ensuring machining position accuracy. (Special tip sha...
Nichia Alloy Co., Ltd.
370+ people viewing
Last viewed: 7 hours ago
Dowel hole diamond gun reamers (ND-OS-GRS, GRL) are available for H7 and H8 dimensions, allowing high precision machining of dowel holes. We can al...
10 models listed
Asahi Tool Manufacturing Co., Ltd.
760+ people viewing
Last viewed: 1 hour ago
■ Selected table by coating material ・ Carbon steel S50C: 〇 ・ Alloy steel SCM: 〇 ・ Tool steel SK (~ 40HRC): 〇 ・ Tymptoms steel SKD: 〇 ・ St...
10 models listed
Kanefusa Co., Ltd.
120+ people viewing
Last viewed: 22 hours ago
Fast Response
5.0 Company Review
This is a diamond reamer with a diameter of φ3, which is the smallest diameter for accessories with a diamond reamer. When machining small parts, i...
Nichia Alloy Co., Ltd.
350+ people viewing
Last viewed: 16 minutes ago
We can also provide special tools that match the shape of the workpiece and the material to be cut. ■Tool material ・Carbide ・Diamond ■Main reco...
10 models listed
A Smart Co., Ltd.
160+ people viewing
Last viewed: 8 hours ago
■Summary Bead reamer: Diamond shaper (round straight type) / 1 set This reamer has a tip coated with industrial diamonds on the tip and can be used...
Kanefusa Co., Ltd.
150+ people viewing
Last viewed: 1 day ago
Fast Response
5.0 Company Review
The use of an odd number of teeth achieves high roundness, and the stepped shape achieves high surface roughness, achieving high quality hole machi...
Kanefusa Co., Ltd.
130+ people viewing
Last viewed: 17 hours ago
Fast Response
5.0 Company Review
High-speed feed machining has been achieved with the multi-blade specification. ■Applications Hole finishing ■Applicable materials Non-ferrous me...
Nichia Alloy Co., Ltd.
230+ people viewing
Last viewed: 19 hours ago
■Summary ・Stable machining accuracy with 6-flute (8-flute) unevenly divided blades ・Since the carbide grade has ultra-fine particles, it can be u...
10 models listed
Asahi Tool Manufacturing Co., Ltd.
970+ people viewing
Last viewed: 1 hour ago
■ Features ・ Used for precision finishing of the lima processing hole for machine work ・ Hole accuracy is highly high -precision processing ■ Se...
10 models listed
A Smart Co., Ltd.
130+ people viewing
Last viewed: 9 hours ago
■Summary Bead reamer: Replacement diamond tip (tapered type) / 1 piece A replacement tip for reamers with an industrial diamond-coated tip attached...
Nichia Alloy Co., Ltd.
280+ people viewing
Last viewed: 6 hours ago
We can also provide special tools that match the shape of the workpiece and the material to be cut. ■Tool material ・Carbide ・Diamond ■Main reco...
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Asahi Tool Manufacturing Co., Ltd.
1250+ people viewing
Last viewed: 7 hours ago
■ Features ・ The blade length is longer than chucking lima, and the guide is good for processing long holes. ・ Because the length of the food is ...
10 models listed
Nichia Alloy Co., Ltd.
420+ people viewing
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Dowel hole diamond gun reamers (ND-OS-GRS, GRL) are available for H7 and H8 dimensions, allowing high precision machining of dowel holes. We can al...
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Fukuda Seiko Co., Ltd.
240+ people viewing
Last viewed: 9 hours ago
■Blade diameter tolerance ・ (D≦3) +0.002～+0.007 ・ (3＜D≦6) +0.004～+0.009 ・ (6＜D≦10) +0.006～+0.012 ・ (10＜D≦18) +0.007～+0.015 ・ (18＜D≦30)...
Asahi Tool Manufacturing Co., Ltd.
630+ people viewing
Last viewed: 14 hours ago
■ Features ・ Used for precision finishing of the lima processing hole for machine work ・ Hole accuracy is highly high -precision processing ■ Se...
10 models listed
Kanefusa Co., Ltd.
140+ people viewing
Last viewed: 14 hours ago
Fast Response
5.0 Company Review
Cost reduction is possible by selecting appropriate discharge cutting conditions for each cutting edge. ■Applications Hole finishing ■Applicable ...
TUNGALOY CORPORATION
110+ people viewing
Last viewed: 1 day ago
■Features ・High-precision head enables finishing with H7 hole accuracy - Significantly improved machining efficiency compared to existing reamer m...
Asahi Tool Manufacturing Co., Ltd.
970+ people viewing
Last viewed: 9 hours ago
■ Features ・ The blade length is shorter than the machine lima and advantageous for cutting powder discharge ・ Ideal for handlever -to -hande pro...
10 models listed
Nichia Alloy Co., Ltd.
290+ people viewing
Last viewed: 9 hours ago
We can also provide special tools that match the shape of the workpiece and the material to be cut. ■Tool material ・Carbide ・Diamond ■Main reco...
10 models listed
