At Guru Nanak Machine Tools, we manufacture a comprehensive range of high‑precision VTL jaws (vertical turret lathe jaws) designed to deliver secure workpiece gripping, high clamping force, and repeatable positioning for heavy‑duty machining operations. Our product portfolio includes hard jaws, soft jaws, pie jaws, and custom‑profile jaws – all engineered to withstand the demanding cutting forces, vibration, and thermal variations of vertical turning applications. Whether you need standard American Standard / DIN top jaws, serrated jaws, or custom‑designed jaws for complex components, our VTL jaws ensure consistent part holding, minimal deflection, and improved surface finish – helping you achieve higher machining accuracy and reduced downtime.
With decades of experience in workholding and fixture design, we focus on high‑grade material selection, precision machining, and robust heat treatment. Our VTL jaws are manufactured from premium alloy steels (4140, 4340, or tool steels), through‑hardened or case‑hardened to optimize wear resistance and toughness, with precision‑ground serrations and locating surfaces to deliver exceptional gripping force, rigidity, and long service life – even under heavy interrupted cuts and high‑speed turning.
Why choose Guru Nanak VTL Jaws
Every jaw we produce undergoes rigorous dimensional inspection, hardness testing, and clamping force verification – backed by our commitment to precision workholding. From standard top jaws to bespoke solutions for special workpieces, our jaws provide the reliability and performance that machinists and production engineers depend on.
high clamping force & rigidity
Our VTL jaws are designed to deliver high gripping force with minimal deflection – from light‑duty finishing operations to heavy‑duty roughing. Hardened serrations and robust body construction ensure secure part holding even under severe cutting loads and interrupted cuts.
precision‑ground serrations & locating surfaces
Manufactured with precision‑ground serration profiles (1.5 mm, 2.0 mm, and custom pitches) and accurately machined locating diameters, our jaws ensure repeatable part positioning to within microns – essential for consistent concentricity and dimensional accuracy in VTL operations.
versatile configurations
Available in hard jaws (for high‑production runs), soft jaws (for finishing and delicate workpieces), pie jaws (segmented for thin‑walled parts), and custom‑profile jaws – with multiple mounting styles to fit most VTL chucks and workholding systems.
durability & heat treatment
Through‑hardening or case‑hardening to HRC 50‑58, combined with premium alloy steels (4140, 4340, H13) and optional wear‑resistant coatings (TiN, TiCN), ensure long tool life, resistance to wear and impact, and stable performance even in high‑temperature, continuous‑cycle environments.
Advanced VTL jaw manufacturing technology
Our manufacturing processes incorporate CNC machining, precision grinding of serrations, and advanced heat treatment (vacuum hardening, nitriding) to achieve the highest levels of dimensional accuracy, surface finish, and mechanical properties. From standard American Standard / DIN jaws to custom‑designed jaws for special applications, we offer features that enhance gripping, reduce setup time, and improve overall machining economics.
- Premium alloy steel (4140, 4340, H13) for strength and wear resistance
- Through‑hardening or case‑hardening (HRC 50‑58) for optimum hardness and toughness
- Precision‑ground serrations (1.5mm, 2.0mm, and custom pitches) for positive gripping
- Custom serration profiles and locating diameters available
- Soft jaws for finishing operations – easily machinable for part‑specific profiles
- Hard jaws for high‑production runs – durable and wear‑resistant
- Pie jaws (segmented) for thin‑walled or delicate workpieces
Frequently asked questions
We offer a complete range including hard jaws, soft jaws, pie jaws, serrated jaws, and custom‑profile jaws. We also provide top jaws compatible with standard power chucks and custom base jaws for specialized fixtures. Custom sizes, serration pitches, and locating dimensions are available upon request.
Our quality process includes CNC machining, precision grinding, coordinate measuring machine (CMM) inspection, and hardness testing – ensuring every jaw meets or exceeds ISO/DIN standards for dimensional accuracy, gripping force, and wear resistance. Each batch is traceable with documented inspection reports.
Absolutely. We provide custom serration profiles, special jaw heights, diameters, and step designs. We also offer soft jaws that can be machined on‑site to match your part geometry, and hard jaws with special coatings (TiN, TiCN) for extended tool life. Our engineering team works with you to create the ideal jaw design for your application.
Yes. Our jaws are manufactured from high‑grade alloy steels with appropriate heat treatment to withstand heavy cutting forces, high temperatures, and continuous production cycles. We also offer optional coatings (e.g., TiN, TiCN) for enhanced wear resistance and reduced friction, ensuring reliable performance in demanding environments.
We offer comprehensive application support – from jaw type selection, size and serration specification, to clamping force calculation and maintenance recommendations – ensuring you achieve optimal workholding performance, part quality, and process reliability. Our team is available to assist with custom designs and troubleshooting.