Disclosure: As an Amazon Associate I earn from qualifying purchases. Learn more
Choosing a Tourna stringing machine comes down to how you want to apply tension, how often you string, and how much control you want over the process. The lineup includes manual crank and drop-weight models, electronic constant-pull machines, and a feature-rich digital option. One item in this comparison is a clamp accessory rather than a complete machine, so it may make sense only if you already own compatible Tourna equipment.
Quick Comparison
| Product | Type | Standout features | Best suited for |
|---|---|---|---|
| Tourna 350-CS Premium Crank Stringing Machine | Manual crank lock-out | Six-point mounting, adjustable stand, quick-lock cams | Stringers who want a sturdy crank machine |
| Tourna 175-CS Linear Pull Drop Weight Stringing Machine | Drop weight | Linear gripper, six-point mounting, swivel clamps | Hands-on stringers who prefer a drop-weight system |
| Tourna Cube Precision Stringing Machine | Digital stringing machine | Programmable controls, pre-stretch options, auto-start gripper | Stringers seeking multiple electronic-style settings |
| Tourna Universal CNC Precision Clamp | Clamp accessory | CNC-crafted construction, sandblasted surface, 12 mm post | Tourna machine owners needing a compatible clamp |
| Tourna 650-ES Constant Pull Precision Tennis Stringing Machine | Electronic constant pull | Digital controls, memory, pre-stretch, foot pedal | Stringers who want electronic tension control |
Our Picks: Best Tourna Stringing Machines reviews
Tourna 350-CS: A Crank Machine with a Sturdy, Adjustable Setup
The Tourna 350-CS is a manual crank machine built around a lock-out tensioner. Its six-point, self-leveling mounting system and single-knob adjustment are designed to make racquet setup straightforward. A full-turn turntable with a brake gives you room to work while helping hold the racquet in position.
The machine also includes a height-adjustable stand, tools, and CNC-crafted clamps with a sandblasted surface. Tourna says the clamp surface is intended to hold string with less pressure and reduce the chance of string damage. Quick-lock cams and a smooth base are aimed at making repeated clamping and turning less tiring.
Compared with the 175-CS drop-weight model, the 350-CS uses a crank lock-out tensioner rather than a linear pull drop weight. It may suit a home stringer who wants a dedicated stand and a familiar crank setup. The trade-off is that it does not offer the digital controls or constant-pull tensioning listed for the 650-ES.
Pros:
- Six-point, self-leveling mounting system
- Height-adjustable stand and tools are included
- Full 360-degree turntable with a brake
- CNC-crafted clamps and quick-lock cams
Cons:
- Manual crank lock-out tensioning, not electronic constant pull
- Less suited to shoppers who want programmable digital settings
Verdict: Choose the 350-CS if you want a stand-mounted crank machine with a broad set of practical setup features and do not need electronic controls.
Tourna 175-CS: A Linear-Pull Drop-Weight Option
The Tourna 175-CS uses a drop-weight tensioning system with a linear string gripper. Its design is focused on a direct, hands-on stringing process: you insert the string into the gripper and use the drop-weight mechanism to pull tension. The listing describes an ultra-smooth track base and a full-turn turntable with a brake.
A six-point mounting system with adjustable V supports is designed to hold the racquet while helping limit frame stress during stringing. The machine comes with two adjustable swivel clamps, a built-in ruler, and basic tools. Its listed dimensions are 29 inches long by 6.5 inches wide, and the listed weight is 53 pounds. The product description also states a two-year warranty.
Against the 350-CS, the 175-CS trades the crank for a drop-weight approach. That can be appealing if you prefer to control the tensioning process manually, but it is not the pick for someone seeking a digital panel, memory settings, or automatic tension features. Its listed weight is also worth considering if you need to move or store the machine often.
Pros:
- Linear string gripper designed for straightforward tensioning
- Six-point mounting with adjustable V supports
- Swivel clamps, ruler, and tools are included
- Two-year warranty is stated in the product description
Cons:
- Drop-weight operation is more hands-on than a digital machine
- Listed weight of 53 pounds may make frequent moving inconvenient
Verdict: The 175-CS is a sensible match for stringers who specifically want a linear-pull drop-weight machine and are comfortable with its manual process.
Tourna Cube: Digital Controls and Advanced Stringing Functions
The Tourna Cube is the most feature-focused option in this group. Its digital control panel includes four pre-stretch levels, tension adjustments in 0.1 increments, eight memory settings, a knot function, lb/kg selection, and six pull speeds. The machine also has a Diablo tensioner and an auto-start string gripper.
Tourna lists a mechanical height-adjustable stand and gravity-assisted clamps. The clamps are designed to close with a click and unlock either with a button or by dropping them onto the base. A smooth base is intended to make movement around the turntable easier. The control panel also includes a USB port for charging a phone.
These extra controls offer more flexibility than the manual 350-CS and 175-CS. They may be useful if you switch among stored setups or want to adjust pull speed and pre-stretch. On the other hand, the Cube’s advanced functions may be unnecessary if you string only occasionally and prefer a simpler manual machine. The product details do not specify a warranty or include a list of tools, so check the current listing if those details matter to you.
Pros:
- Multiple pull speeds and pre-stretch levels
- Eight memory settings and a knot function
- Auto-start string gripper and Diablo tensioner
- Mechanical height-adjustable stand and gravity-assisted clamps
Cons:
- Its broad set of controls may be more than a casual stringer needs
- Product details provided do not specify a warranty
Verdict: Consider the Cube if you want a digital machine with several tensioning and workflow settings; choose a manual Tourna model if simplicity is your priority.
Tourna Universal CNC Clamp: A Replacement or Upgrade Accessory
This product is a clamp, not a complete stringing machine. Tourna describes it as a universal CNC-crafted precision clamp made to fit Tourna stringing machines. Its sandblasted surface is designed to add friction so the clamp can hold string with less pressure, while the evenly spaced teeth are intended to provide consistent contact.
The clamp has a hard anodized finish and a 12 mm diameter post. Tourna also highlights a dial plate designed to help prevent the clamp from loosening during or between string jobs. Because fit is essential for this kind of part, check the post size and compatibility with your exact machine before ordering.
Unlike the other products here, this clamp does not provide a tensioner, mounting system, or turntable. It is relevant if you already have a compatible Tourna machine and need a clamp, but it should not be considered as a standalone solution for stringing racquets.
Pros:
- Designed to fit Tourna stringing machines
- CNC-crafted, sandblasted construction
- 12 mm post size is specified
- Dial plate is designed to resist clamp slippage
Cons:
- It is an accessory, not a complete stringing machine
- Compatibility should be checked against your machine before purchase
Verdict: Buy this clamp only if you need a compatible Tourna replacement or upgrade; shoppers who need a full stringing setup should compare the other four products.
Tourna 650-ES: Electronic Constant-Pull Tensioning
The Tourna 650-ES is an electronic machine with true constant-pull tensioning and a microprocessor-based tensioner. Its LCD display provides six pull speeds, tension adjustments in 0.1-pound increments, a knot function, memory, a timer, pre-stretch, and lb/kg selection. A foot pedal is included.
The machine also has a six-point, self-leveling mounting system with single-knob adjustment, a full-turn turntable with a brake, and CNC-crafted clamps. The product description says the clamp surface is designed to hold string with minimal pressure. A height-adjustable stand and stringing tools are included, along with a smooth base and quick-lock cams.
Compared with the 350-CS, the 650-ES adds electronic constant-pull tensioning and more control options. It may suit frequent stringers who want adjustable pull speeds and stored settings. Those features may be unnecessary if you want a straightforward manual machine, and the product details do not provide a warranty term.
Pros:
- Electronic true constant-pull tensioning
- LCD controls include pull speeds, memory, and pre-stretch
- Six-point, self-leveling mounting with quick adjustment
- Foot pedal, stand, and tools are included
Cons:
- Electronic features may be more than an occasional stringer needs
- Product details provided do not specify a warranty
Verdict: Choose the 650-ES if electronic constant-pull tensioning and a broad set of control options matter more to you than keeping the setup simple.
How to Choose a Tourna Stringing Machine
Choose a Tensioning System That Fits Your Workflow
The main difference among these machines is how they pull tension. The 175-CS uses a drop weight, while the 350-CS uses a manual crank lock-out tensioner. The 650-ES offers electronic constant-pull tensioning, and the Cube adds a digital panel with several adjustable functions. Think about whether you want a hands-on process or more electronic control before comparing other features.
Consider How Much Control You Need
If you prefer a basic setup, the manual machines may be easier to match to your needs. If you want options such as multiple pull speeds, pre-stretch, memory, or a knot function, compare the control panels and listed settings of the Cube and 650-ES. Extra settings are useful only if you expect to use them, so avoid choosing a more complex machine based on features you do not need.
Look Closely at the Mounting System
Both the 350-CS and 650-ES list six-point, self-leveling mounting systems with quick adjustment. The 175-CS also has six-point mounting and adjustable V supports. These details matter because the machine must hold a racquet securely while you work. Check the product listing for the mounting design and adjustment method that feel most practical for your stringing routine.
Factor in Clamps and Turntable Design
Clamps hold the string between pulls, so their design can affect how easily you work and how much pressure is placed on the string. Several Tourna models in this comparison feature CNC-crafted clamps, and the 175-CS includes adjustable swivel clamps. A turntable brake can also help keep the racquet steady when needed. If you are shopping for the Universal CNC clamp, confirm the post size and machine compatibility before ordering.
Think About Stand, Space, and Moving the Machine
The 350-CS and 650-ES are described as coming with height-adjustable stands, and the Cube lists a mechanical height-adjustable stand. The 175-CS has listed dimensions and a weight of 53 pounds, which can help you judge whether it fits your workspace and whether you plan to move it often. Check the full product details for the specific model you are considering, especially if storage space is limited.
Compare Included Tools and Warranty Details
Included accessories can save you from sourcing basic tools separately. The 350-CS and 650-ES descriptions mention stringing tools; the 175-CS lists pliers, an awl, and a wrench set. The 175-CS description also states a two-year warranty. Warranty information is not provided for every item in the product details here, so confirm the terms for your chosen machine before purchasing.
Separate Machines from Replacement Parts
The Universal CNC Precision Clamp is the only accessory in this roundup. It cannot replace a full machine because it does not include a tensioner, mounting system, or turntable. If you are buying your first stringing setup, focus on the 350-CS, 175-CS, Cube, or 650-ES. Consider the clamp only if you already own a compatible Tourna machine and need that part.
Frequently Asked Questions
Which Tourna machine uses electronic constant-pull tensioning?
The Tourna 650-ES is described as using true constant-pull tensioning with an electronic tensioner. The Cube also has a digital control panel and advanced stringing functions, but the product details provided do not describe it with the same true constant-pull wording.
What is the difference between the 350-CS and 175-CS?
The 350-CS is a manual crank lock-out machine, while the 175-CS uses a linear-pull drop-weight system. Both list six-point mounting, but their tensioning methods and included features differ.
Is the Tourna Universal CNC clamp a complete stringing machine?
No. It is a clamp accessory described as fitting Tourna stringing machines. Check the 12 mm post size and compatibility with your specific machine before buying it.
Which model has the most listed digital settings?
The Cube lists four pre-stretch levels, 0.1 tension controls, eight memory settings, a knot function, lb/kg selection, and six pull speeds. The 650-ES also offers digital controls, including pull speeds, memory, pre-stretch, and a knot function.
Which Tourna machine includes a stand?
The 350-CS and 650-ES descriptions list a sturdy height-adjustable stand. The Cube description lists a mechanical height-adjustable stand. Check the full listing for the exact package details before ordering.
Is the Tourna 175-CS easy to move?
The product description lists its weight as 53 pounds, so it may take effort to move compared with a lighter piece of equipment. Consider your workspace and storage needs before choosing it.
Final Recommendation
For electronic control and true constant-pull tensioning, the Tourna 650-ES is the clearest fit. The Cube is a strong alternative if its memory settings, pre-stretch options, and other digital functions match your workflow. If you prefer manual equipment, choose between the 350-CS crank system and the 175-CS drop weight based on which tensioning method you want. The Universal CNC clamp is for Tourna machine owners who need a compatible accessory, not for shoppers seeking a complete stringing setup.