Vintage Jacobs 34-06 1/2" Chuck & 3 Morse Taper Spindle Adapter Sleeve Kit
£55.00
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Vintage Jacobs 34-06 1/2" Chuck & 3 Morse Taper Spindle Adapter Sleeve Kit
£55.00
Item Overview
- Type: Vintage Industrial Engineering Drill Chuck and Morse Taper Extension Reduction Sleeve Assembly
- Designer: Precision Toolroom Mechanical Engineer
- Brand: Jacobs (Authentic Vintage Stamped Markings) and HG / British Marque
- Manufacturer: The Jacobs Manufacturing Company (Chuck) & High-Grade Toolroom Foundries
- MPN: 34-06 (Chuck Specific MPN)
- Place of Origin: United States (Chuck) and Great Britain / United Kingdom (Sleeves)
- Style: Heavy-Duty Engineering Shop Tooling / Traditional Lathe and Drill Press Workshop Equipment
- Colour: Bright Burnished Steel, Dark Machined Oiled Grey, and Historic Mottled Surface Oxide
- Design Era: Mid-20th Century Industrial Era (c. 1950s–1970s)
- Material: Hardened Carbon Steel, Precision-Ground Tool Steel Alloy, Induction-Hardened Drive Tangs
- Set Includes: Total of Eight (8) Premium Toolroom Assets (Configured As 3 Main Nested Units): Unit 1: Authentic Jacobs No. 34-06 Keyed Drill Chuck (1–13mm / 0–1/2" Capacity) mounted on a 6JT spindle arbour taper, seated directly into a Short 4-3 HG Morse Taper Extension Sleeve. Unit 2: Long 4-3 HG Morse Taper Extension Sleeve. Unit 3: Heavy MT 4-6 Morse Taper Reduction Socket, embedded with nested reduction sleeve inserts. (8 Component Parts Total)
- Features: Flawless Deep-Stamped Manufacturer Marks, Modular Nested Toolroom Architecture, Machined Drift Slot Apertures, Precision Keyed Jaw Guide Core, Heavy Internal Plain Bearing Assemblies, Thick-Walled Extension Castings
- Condition: Good Used Industrial Condition (Sold As Seen / As Is / Tightly nested together as pictured)
- Size and Capacity: Chuck capacity handles standard 0 to 1/2 inch drill bit shanks (1mm–13mm) via its 6 Jacobs Taper (JT6) mounting core. Total cluster lengths range from approximately 7.25 inches (18.5cm) to 9.5 inches (24.1cm); please check the detailed gallery photographs alongside the brass rule to verify individual parameters.
Dating & Historical Context
- Dating: This robust, heavyweight collection of classical toolroom drilling necessities spans the height of post-war manufacturing (c. 1950s–1970s). The specific production signatures—including the iconic radial geometric sans-serif block typeface stamped into the chuck collar, the classic elongated rectangular drift ejection apertures, and the thick, over-engineered drive tangs—are benchmark design diagnostics of mid-century industrial machine-shop tooling.
- Historical Note: The Jacobs "Plain Bearing" line, particularly the heavy-duty 34-06 variant, was the gold-standard workhorse for industrial engineers, foundries, and shipyard fabrication bays worldwide. Engineered specifically for heavy radial and axial loading on stationary pillar drills, radial arm drills, and lathe tailstocks, the 34-06 relies on an internal heat-treated plain bearing race to achieve incredible tightening torque. Accompanying the chuck in this historic lot are heavy-duty industrial extension and reduction sleeves, including premium HG marque 4-3 extensions and a substantial MT 4-6 reduction core. Note on Item Count: While it packs down visually into three main workshop units on the bench, this modular engineering assembly breaks down into exactly 8 distinct component items (including the chuck holder, the integrated arbour keys, the multi-fit nested internal reduction sleeves, and the master taper shafts). These high-grade adapters were essential components of traditional workshops, allowing machine operators to quickly extend the throat capacity of a drill press quill or adapt a massive No. 6 spindle down to smaller tooling. This bundle represents a beautiful capsule of honest mechanical history, offering tremendous utility for modern-day heritage workshops or old-school engineering displays.
Description
A heavily built, highly visual collection for traditional machinists, model engineering studios, or heritage farm workshop restorers, this eight-piece modular Jacobs chuck and extension sleeve assembly is full of industrial character. The bundle delivers a phenomenal combination of classic workshop adapters, grouping a legendary heavy-capacity keyed chuck together with robust, long-reach Morse taper reduction and extension sleeves. Perfect for bringing a vintage Elliot or Progress pillar drill back to true service, or expanding the depth capacity of a traditional engineering lathe, these pieces showcase the solid, heavy-gauge steel engineering that modern alloy replacements simply cannot match.
A heavily built, highly visual collection for traditional machinists, model engineering studios, or heritage farm workshop restorers, this eight-piece modular Jacobs chuck and extension sleeve assembly is full of industrial character. The bundle delivers a phenomenal combination of classic workshop adapters, grouping a legendary heavy-capacity keyed chuck together with robust, long-reach Morse taper reduction and extension sleeves. Perfect for bringing a vintage Elliot or Progress pillar drill back to true service, or expanding the depth capacity of a traditional engineering lathe, these pieces showcase the solid, heavy-gauge steel engineering that modern alloy replacements simply cannot match.
Expert Identification & Design Features:
- Authentic Jacobs 34-06 Pedigree: The chuck collar features crisp, clean stamped branding reading "JACOBS U.S.A. - 34-06 6 TAPER", confirming its genuine premium engineering heritage.
- Modular Nested Architecture: The unique 8-piece breakdown offers incredible toolroom versatility, allowing components to be used as three main nested units or separated to match custom setups.
- Integrated Drift Slots: The heavy-duty extension and reduction casings house elongated, precision-milled cross-apertures engineered to accept traditional steel drift wedges for seamless tool removal.
- Precision Morse Architecture: The extension arbors and reduction sockets utilize traditional self-holding machine tapers, guaranteeing automatic concentric alignment when pressed home inside a matching live spindle.
Condition Report
This vintage eight-piece engineering set is in good used industrial condition, showing an abundance of authentic mechanical utility, hard wear, and workshop history. The components are being offered sold as seen / as is, coming tightly nested together as pictured on the bench. The solid tool-steel bodies are structurally immaculate, showing entirely straight main shafts, unmarred key holes, and zero structural cracks or deformed drive tangs. The chuck operates smoothly through its manual range with cleanly seating jaws. Cosmetically, the lot displays a gorgeous, highly authentic workspace character, featuring a dark, oil-rubbed grease patina, superficial storage scratches, and notable areas of historic surface rust and mottling across the non-ground body surfaces—none of which impacts the structural rigidity of the steel. Please consult the detailed gallery photography to inspect the tooth profiles and verify the physical scales.
This vintage eight-piece engineering set is in good used industrial condition, showing an abundance of authentic mechanical utility, hard wear, and workshop history. The components are being offered sold as seen / as is, coming tightly nested together as pictured on the bench. The solid tool-steel bodies are structurally immaculate, showing entirely straight main shafts, unmarred key holes, and zero structural cracks or deformed drive tangs. The chuck operates smoothly through its manual range with cleanly seating jaws. Cosmetically, the lot displays a gorgeous, highly authentic workspace character, featuring a dark, oil-rubbed grease patina, superficial storage scratches, and notable areas of historic surface rust and mottling across the non-ground body surfaces—none of which impacts the structural rigidity of the steel. Please consult the detailed gallery photography to inspect the tooth profiles and verify the physical scales.
Shipping & Logistics
- Domestic Shipping: FREE UK TRACKED DELIVERY.
- Packaging: The heavy iron and steel components of this 8-piece machining group will be wrapped independently in ultra-thick, high-density bubble cushioning to prevent clattering, friction scoring, or surface bruising during transit, and shipped together inside a rigid container to guarantee safe arrival.
- Dispatch: Order before 12.00pm and we ship same day.
Returns & Payment Policies
We want you to be delighted with your heritage find.
We want you to be delighted with your heritage find.
- Not as Described: In the unlikely event of an error in our listing, we will provide a full refund and cover the return postage costs.
- Change of Mind: We accept returns within 30 days; however, in these instances, the buyer is responsible for the return shipping costs.