Your Professional OZ Collet Supplier

Dezhou Newrgy Machinery Co.，Ltd it is an enterprise specializing in the production of machine tool accessories and precision machinery. The main products are collets, CNC tool holders, heat shrinkable tools, drill chucks, pull studs, nuts and spanners/wrenches, CNC vises, end mills etc.

Why Choose us

Well-Experienced
The company has experienced technical R&D personnel who can make complex product samples according to samples or drawings. With the best product quality, the most reasonable product price, and the most thoughtful and convenient service.

Advanced Production Equipment
The company has more than 50 sets of advanced production and testing equipment, and hopes to cooperate with more customers for common development and mutual benefit.

OEM Services
We provide OEM services to partners who require customized manufacturing solutions.

Types of OZ Collet

The OZ collet produced by our company mainly include the following types:

OZ20 Collet

An OZ20 collet refers to a collet conforming to the DIN 6388B standard, specifically designated as "Type 4541E." This designation indicates that it is a double-slotted collet designed to securely clamp cylindrical tool shanks with a maximum diameter of 20 millimeters. It is commonly utilized in CNC machining applications. The term "OZ" signifies the specific collet design, while the numeral "20" denotes the clamping range up to 20 millimeters in diameter.

Collet OZ40

A "Collet OZ40" refers to a collet conforming to the OZ standard, featuring a nominal diameter of 40 millimeters. It is commonly utilized in machining applications to securely hold tools or workpieces within a machine spindle. The designation "OZ" indicates a specific design of collet, while the numeral "40" specifies the outer diameter of the collet in millimeters.

OZ25 Collet

OZ-25 Collet Set. Fast single tool changing - no need to touch drawbar after inserting master holder. Spring collets are hardened and ground for maximum holding power and ultra-precision. Drawbar thread: R8 shanks 7/16" - 20; Collets must be snapped into the nut before inserted and tightened into the holder.

High Precision OZ32 Collet

High Precision OZ32 Collet after heat treatment and cold drawing hardening, the strength is relatively high, and it has certain flexibility and plasticity. Under the same surface state and complete hardening, the fatigue limit is equivalent to that of colorful alloy spring steel.

Parameter

Size	D	D1	D	L	L1	L2	L3
OZ16	22.65	25.5	2~16	40	5.5	1.2	9.5
OZ20	27.4	29.8	2~20	45	6	1.35	10
OZ25	32.9	35.05	2~25	52	6	1.4	10
OZ32	41.3	43.7	4~32	60	6	1.45	11
OZ40	49.7	52.2	6~40	68	6	1.45	12
OZ50	61.1	63.8	8~50	80	7	1.55	13

Customization

We have laser machines to laser engrave your logo and tool specifications on the tool body. Also, we can do custom printing on plastic boxes.

We can also provide other types of collets in different sizes and quantities according to your requirements, the production cycle is generally 7 days, the details can be consulted with customer service.

Feature Of OZ Collet

High Precision DIN6388 EOC OZ25 Collet

High precision DIN6388 EOC OZ25 collet have many feature, including:

Selected steel, durable: Selected high-quality 65 manganese steel, subjected to high-frequency heat treatment and cryogenic treatment, with high strength and fatigue limit, stable performance and large clamping force.

Internal and external circular grinding, precision is guaranteed, surface grinding and polishing treatment, bright appearance, good fit.

High-frequency quenching treatment, good hardness and stable clamping performance.

High Precision OZ32 Collet

High precision OZ32 collet have many feature, including:

The optimal material is matched with the quenching process, the processing effect is good, the processing efficiency is improved, and the service life of the tool is extended.

Ultra-long cryogenic treatment reduces residual stress and enhances wear resistance.

OZ Collet(EOC)Widely used in milling, drilling, wire tapping, engraving, CNC, spindle machine and other clamping tools.After heat treatment and cold drawing hardening, the strength is relatively high, with a certain degree of flexibility and plasticity; large clamping force, wide clamping range.

Package

productcate-1-1

Certificate

FAQ

Q: What is the difference between ER collet and Oz collet?

A: Both collets have slots in them to allow the collet to compress when the nut is tightened, gripping the shank of the tool. However, the positions of the slots vary. Note how the OZ slots only come from one end – they all start from the top (A) – whereas the ER slots start at both top (B) and bottom (C).

Q: How to Determine the Appropriate ER Collet Size?

A: To determine the appropriate ER collet size, measure the diameter of the tool shank and select a collet with a corresponding clamping range. Additionally, ensure that the chosen collet is compatible with your chuck system.

Q: How does OZ collet work?

A: Collets are used to hold a tool in a central position as it rotates. As the tool is inserted into the collet, the device expands and provides uniform pressure that holds the tool in place. However, if the collet stretches too far, it cannot secure the instrument properly and may lose shape.

Q: How long does a OZ collet last?

A: Collets should be replaced every 2 to 3 months if being used 8 hours a day. When inspecting your collet, metallic damage, such as bell mouthing or burrs, should be checked with every tool change. If damage is visible, the collet should be discarded and replaced.

We're well-known as one of the leading oz collet manufacturers and suppliers in China. Please feel free to wholesale high quality oz collet at competitive price from our factory. For more information, contact us now.

OZ Collet, OZ20 Collet, OZ40 Collet