ER Collet Clamping Nuts and ER Collet Sets

An ER collet nut screws onto the spindle or holder nose and pushes the collet into its taper to clamp the tool. Each ER size has its own nut thread. TriQuench India supplies ER collet nuts from ER8 to ER40, plus ER collet sets and spanners.

Direct OEM Sizing & Bulk Pricing
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Industrial Assurance & OEM Standards

Why Indian CNC Manufacturers Choose TriQuench

Direct OEM precision engineering, verified ISO 1940 balancing certifications, and pan-India express dispatch.

1,200+ CNC Customers

⭐ 4.9/5 Rating (250+ Verified Reviews)

Trusted by machine builders, furniture plants, and die-makers across India. Fully compatible with standard Biesse, Homag, SCM, Apex Precision, and Jyoti CNC platforms.

Biesse CompatibleHomag Specs250+ Reviews

ISO & CE Certified

Grade G0.4 Dynamic Balancing

Every spindle is balanced to ISO 1940 Grade G0.4 with sub-3 micron runout accuracy. Manufactured under ISO 9001:2015 certified quality management systems.

ISO 9001:2015ISO 1940 G0.4CE CompliantMake in India

24–48h Fast Shipping

100% Insured Transit

Express dispatch from our central facility in Ahmedabad. Shipped in reinforced heavy-duty wooden crates with vacuum barrier packaging for safe transit.

Pan-India DeliveryWooden CratesTransit Insured
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ER Collet Nut: overview

Replace an ER collet nut when its thread, eccentric ring or face is damaged, since a worn nut adds runout. The ER25 collet and nut pair is common on 3.5 kW spindles; the ER11 collet suits small high speed spindles. An ER collet set covers a range of shank sizes in one box. ER collet price depends on size, precision grade and quantity; as an ER collet supplier in India we quote single pieces and sets.

ER Collet Nut: frequently asked questions

How do I fit an ER collet into the nut?

Snap the collet into the nut first, tilting it so the collet's groove engages the nut's eccentric ring until it clicks. Then insert the tool and thread the nut onto the spindle. To remove, unscrew the nut and press the collet sideways to release it. Never tighten a nut without a collet and tool fitted.

Get a quote for ER Collet Nut

Tell us the model, size or the machine it is for. Our Ahmedabad team replies with specifications, availability and price.

TriQuench India Pvt. Ltd. is an engineering-driven industrial automation partner based in Ahmedabad, Gujarat, specializing in the design and distribution of high-reliability mechanical motion components. Our manufacturing protocols focus on achieving strict dynamic balancing thresholds and minimizing axis runout tolerances to support heavy-duty fabrication job shops and manufacturing plants.

By providing components built to resist high thermal expansion and withstand continuous load requirements, we help machinery builders achieve exceptional surface finish quality and geometric accuracy. We distribute our precision spindle assemblies, variable frequency drives, and optoelectronic laser spares across global engineering centers, ensuring robust machinery performance and long operational lifetimes.