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Piston Quick Change Tool Post and Tool Holders for Lathe
Product Name: Piston Quick Change Tool Post
Type: Piston Type American type tool post
Application: quick change tool post for lathe
Material: steel
Model: 250-100 250-200 250-300 250-400 250-500 axa bxa cxa
Hardness: HRC35-40
Swing Dia:12-20
Feature: Exchange Tool Quickly
No. | A(in) | B(in) | C(in) | D(in) |
250-100 | 2-1/2 | 3-7/8 | 2-1/4 | 9/16 |
250-200 | 3 | 4-5/8 | 2-3/4 | 5/8 |
250-300 | 3-1/2 | 5-1/8 | 3 | 3/4 |
250-400 | 4 | 6-1/4 | 3-5/8 | 7/8 |
No. | EACH SET INCLUDES |
250-100-00 | 250-100.250-101.250-102.250-104.250-107.250-110 |
250-200-00 | 250-200.250-201.250-202.250-204.250-207.250-210 |
250-300-00 | 250-300.250-301.250-302.250-304.250-307.250-310 |
250-400-00 | 250-400.250-401.250-402.250-404.250-407.250-410 |
Traditional four-way tool posts require constant shimming to achieve the correct center height for each cutting tool, wasting valuable machining time and often resulting in less-than-rigid setups. The Piston Type Quick Change Tool Post solves this problem entirely. It allows you to pre-set the height of multiple tools in individual, dedicated holders. When you need to change from a roughing tool to a threading tool, you simply slide the new holder onto the dovetail, lock the piston handle, and you are ready to cut. The locking handle pushes a central piston outward, securely wedging the tool holder against the dovetail of the main block for a solid, vibration-free connection.
Rapid Tool Changes: Swap between turning, boring, threading, and parting tools in seconds. This drastically reduces setup time and increases overall lathe productivity.
Piston Locking Mechanism: A reliable and straightforward design. Pushing the handle actuates an internal piston that locks the holder firmly onto the dovetail, providing excellent rigidity for general machining tasks.
Permanent Height Adjustment: Each tool holder features a knurled thumb nut and locking stop screw. Once you set the cutting tool to the exact center height of your lathe spindle, it stays locked. You never have to use shims again.
Universal Interchangeability: Our tool posts and holders are fully compatible with industry-standard Aloris, Dorian, Phase II, and other brand piston and wedge-style tool holders of the same series (e.g., our BXA holders fit any standard BXA post).
Durable Construction: All components, including the main block and tool holders, are machined from high-quality steel, case-hardened, and precision-ground for long-lasting accuracy and wear resistance.
Direct Manufacturer Savings: Bypass trading companies and source premium lathe tooling directly from our factory for highly competitive wholesale pricing.
Comprehensive Size Range: We manufacture the full spectrum of piston tool post sizes to fit any manual lathe:
100 Series (AXA): For lathes with up to 12" swing.
200 Series (BXA): For lathes with 10" to 15" swing.
300 Series (CXA): For lathes with 13" to 18" swing.
400 Series (DXA): For lathes with 14" to 20" swing.
Complete Kits Available: We offer complete sets that include the main piston tool post body and a selection of standard holders (turning/facing, boring, parting, knurling) to get your machine running immediately.
Strict Quality Control: Every tool post is inspected for dovetail accuracy, piston smooth operation, and clamping rigidity before packaging.
Q1: What is the difference between a Piston type and a Wedge type quick change tool post?
A: Both use the same dovetail tool holders. The difference is the locking mechanism. The Piston type uses a central piston that pushes outward against the holder. The Wedge type uses a sliding wedge that pulls the holder downward and inward against the dovetail. Wedge types generally offer slightly better repeatability and rigidity for heavy interrupted cuts, while Piston types are more economical and perfectly suitable for most general-purpose machining and lighter lathes.
Q2: How do I choose the correct size (AXA, BXA, CXA) for my lathe?
A: The correct size is determined by your lathe's Swing Over Bed (the maximum diameter part it can turn). For example, if your lathe has a 12-inch swing, the AXA series is usually the best fit. If it has a 14-inch swing, the BXA series is recommended. Please consult our sizing chart or contact our sales team with your lathe model for a precise recommendation.
Q3: Can I use wedge-style tool holders on this piston tool post?
A:Yes. The dovetail dimensions for the holders are standardized within each series. An AXA tool holder will fit both an AXA piston tool post and an AXA wedge tool post, regardless of the brand, provided they follow the standard Aloris specifications.
Q4: How do I mount the tool post to my lathe's compound rest?
A: The tool post mounts via a central stud and a T-nut that slides into the T-slot on your lathe's compound rest. We provide a blank (unmachined) base T-nut with the kit. You or your machinist will need to mill this blank T-nut to the specific dimensions of your lathe's T-slot for a custom, rigid fit.
Eliminate shims and drastically reduce your setup times with our reliable Piston Type Quick Change Tool Post Sets.
Contact our sales team today for a complete catalog, sizing assistance, and bulk pricing.
