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Holemaking tools

Holemaking Tools

Find a drill for a new hole or a reamer to finish an existing one. MSU offers solid carbide micro drills, 3D–8D drills, 10D–30D deep-hole drills, replaceable-head systems and solid carbide reamers.

Start with the hole diameter, depth and final tolerance. Then compare the tool’s reach, coolant requirements and fit with your machine.

Send a hole drawing for a new job, or the tool reference and quantity for a repeat order.

Find a Holemaking Tool

Choose a Tool for the Hole You Need

Drilling creates the hole; reaming removes a small allowance from an existing hole to finish its size and surface. A replaceable-head system lets you select the cutting components and drill body together.

Replacing an SPMG or WCMX cutting insert? See Shallow Hole Drilling Inserts. For machine-side clamping, compare Toolholders; for other machining operations, see Cutting Tool Products.

Holemaking tools

Micro Drills

For small holes, compare diameter, point angle and regular or extra-long flute options. Check the working length at the exact diameter you need.

Holemaking tools

Solid Carbide Drills

For 3D, 5D and 8D drilling, compare external- and internal-coolant models with the coolant supply available on your machine.

Holemaking tools

Solid Carbide Deep Hole Drills

For 10D–30D drilling, check usable depth, entry guidance, coolant delivery and the space needed for the complete assembly.

Holemaking tools

Replaceable Head Drills

Replace a cutting head or specify a complete drill assembly. Head, body and connection references must match.

Holemaking tools

Solid Carbide Reamers

Finish a prepared hole to its specified size and surface. Choose around the pre-hole condition, remaining allowance and coolant supply.

Match the operation first, then compare the dimensions and setup.

Compare Holemaking Options

Match the Operation and Tool Construction

The same nominal diameter can be offered in different tool constructions. The existing process and required hole depth help narrow the choice.

A depth ratio relates hole depth to diameter. The selected drill still needs sufficient working length, point clearance and room for chips to leave the hole.

Holemaking tools
Product type Use it for Selection priority
Micro Drills Small-diameter holes Diameter and flute length; spindle and holder runout
Solid Carbide Drills One-piece drills in 3D, 5D and 8D lengths Hole depth and external or internal coolant
Solid Carbide Deep Hole Drills Long holes in the 10D–30D range Entry guidance, working reach and coolant delivery
Replaceable Head Drills A replaceable cutting head with a matched body Component codes and assembled dimensions
Solid Carbide Reamers Finishing a pre-machined hole Pre-hole size, allowance and final inspection

Consider the finished hole as well as the operation that comes before it.

Check the Hole Requirements

Work Back from the Finished Hole

A through hole needs exit clearance. A blind hole needs enough depth for the cutting end as well as the required full-diameter section. Include these features when comparing tools.

  • Finished dimensions: identify diameter, full-diameter depth, tolerance and surface requirement.
  • Starting condition: distinguish drilling from solid, enlarging a hole and finishing a prepared hole.
  • Entry and exit: identify slopes, interruptions or cross-holes that affect cutting contact.
  • Coolant: match the tool construction to the machine’s delivery method.
  • Assembly: check shank fit, mounted projection and clearance around the part.
  • Material: use the actual grade and condition when choosing geometry and cutting data.
Holemaking tools

For an existing machining problem, keep the tool reference and a measurement of the affected hole. Note whether the issue occurs at entry, along the bore or at breakthrough.

For stepped holes or dimensions outside the standard sizes, email the part drawing to discuss Custom Cutting Tools.

Email the hole drawing with the material and the feature that is difficult to machine.

Discuss a Holemaking Job

Compare the Available Series and Sizes

Use Downloads for dimension drawings. Each tool type has its own length and diameter symbols, so use the drawing that belongs to the selected model.

Holemaking tools
Tool type Available options Dimension or fit to check
Micro Drills 326, 326L, 426 and 426L Cutting diameter, flute length and point angle
Solid Carbide Drills MGP and MGPP: 3D/5D; MGPC: 3D/5D/8D Flute length, shank and coolant construction
Solid Carbide Deep Hole Drills 10D, 15D, 20D, 25D and 30D Working reach and total assembly length
Replaceable Head Drills Mono Tip and Multi Tip Head, body, interface and component list
Solid Carbide Reamers REA-H7 and REAC-H7 Cutting diameter, flute count and coolant

Use the selected model’s drawing to check dimensions before ordering.

View Holemaking Dimensions

Define the Hole Inspection Requirements

Specify how diameter, depth and any controlled surface or position will be measured. Tool inspection and finished-hole inspection answer different questions.

Tool production and inspection equipment
Tool production and inspection equipment
Tool production and inspection equipment

See MSU Factory and Quality Control for equipment and tool-measurement information.

For a trial, keep the tool reference and setup with the hole measurements so a dimensional issue can be traced to the relevant operation.

Specify the tool measurements and records required before placing the order.

View Tool Inspection Information

Order a Tool or Discuss a Drawing

The quotation will identify the selected tools or components, quantity, delivery terms and any agreed inspection records.

Tool production and inspection equipment

Repeat orders

Use the full tool or component reference and quantity, or the previous order number. Mention any change to the application.

New applications

Email the hole drawing and material. Highlight the depth, tolerance, clearance or machining problem that needs attention.

MOQ and samples

MOQ is normally 5–10 pieces, confirmed for the selected product. Samples and sample freight are charged.

Delivery and payment

Production and shipping timing are confirmed in the quotation. T/T deposit and balance terms are stated with the order.

Purchasing information

See Ordering and Delivery for purchasing terms and Downloads for dimension drawings.

Contact

Email Maria at maria@msutools.com or call/WhatsApp +86 13973369578.

Check the purchasing terms when confirming your tool reference, quantity and delivery.

View Ordering and Delivery

Holemaking Tools Questions

How do I decide between drilling and reaming?

Use a drill to create the hole. Reaming is a finishing operation on a prepared hole with a controlled allowance. If the final size or finish needs a separate finishing cut, define that requirement before selecting the pre-hole drill.

Which drill lengths are available?

The solid carbide drill range includes 3D, 5D and 8D options; deep-hole drills cover 10D through 30D. Compare the required hole depth with the actual tool dimensions and assembled reach.

Can a longer drill replace a shorter one?

It may reach the hole, but additional projection changes the setup. Use the shortest tool and mounted length that provide the required depth and clearance.

How do I replace a drill head or insert?

Use the full reference of the component and the body it fits. For SPMG or WCMX inserts, compare Shallow Hole Drilling Inserts. For a replaceable-head assembly, identify both the head and drill body.

Can I request a stepped or special tool?

Yes. Email the part drawing with the material, hole dimensions and machine constraints. The proposed geometry and inspection requirements can then be agreed.

What should I send for a repeat order?

Send the full tool reference or previous order number, quantity and any change to the application. For an assembly, state which components you need.

When will my order be ready?

Production timing, availability and shipping are confirmed in the quotation for the selected tools, quantity and destination.