Description
Splined Yoke 04 (Ball Attachment) — Spring-Ball Quick-Couple PTO Yoke for Enhanced Retention
The Splined Yoke 04-Ball Attachment bridges the gap between the convenience of push pin designs and the security of bolt-type retention. Spring-loaded steel balls press outward into the PTO shaft groove, creating a circumferential interlock that is significantly more vibration-resistant than a single flat-faced push pin. The ball detent engagement is entirely hand-operated — no tools required — yet the spherical contact geometry provides approximately 40% more pull-out resistance than conventional push pin designs. This makes the Type 04 the optimal choice for operators who need quick implement changes without compromising on connection security.
🔧 Technical Specifications
| Series | A(mm) | B(mm) | C(mm) | D(mm) | E(mm) | F |
|---|---|---|---|---|---|---|
| 1.0504B/D | 22 | 54 | 100 | 26 | Φ13 | 1 3/8″Z6/Z21 |
| 2.0504B/D | 23.8 | 61.3 | 102 | 26 | Φ13 | 1 3/8″Z6/Z21 |
| 3.0504B/D | 27 | 70 | 111 | 26 | Φ13 | Z6/Z21 |
| 4.0504B/D | 27 | 74.6 | 111 | 26 | Φ13 | Z6/Z21 |
| 5.0504B/D | 30.2 | 80 | 117 | 26 | Φ13 | Z6/Z21 |
| 32.0504B/D | 32 | 76 | 117 | 26 | Φ13 | Z6/Z21 |
| 6.0504B/D | 30.2 | 92 | 123 | 26 | Φ13 | Z6/Z21 |
| 6.0504C/E | 30.2 | 92 | 148 | 34 | Φ16 | 1 3/4″Z6/Z20 |
| 7.0504B/D | 30.2 | 106.5 | 137 | 26 | Φ13 | Z6/Z21 |
| 8.0504B/D | 35 | 106.5 | 130 | 26 | Φ13 | Z6/Z21 |
| 8.0504C/E | 35 | 106.5 | 159 | 34 | Φ16 | 1 3/4″Z6/Z20 |
⭐ Key Features & Benefits
⚪ Spring-Ball Detent Lock
Multiple hardened steel balls engage the PTO groove simultaneously, creating a 360° interlock far superior to single-point push pins.
💪 40% Higher Pull-Out Resistance
Spherical ball-to-groove contact geometry provides significantly stronger axial retention than flat-faced pin designs.
🔒 Tool-Free Operation
Hand-operated like a push pin — slide a release collar to disengage balls and remove the yoke in seconds.
⚙ Dual Ball Sizes
Φ13 balls for standard-duty (Series 1-8 B/D) and Φ16 balls for heavy-duty 1 3/4″ spline variants (C/E).
🔥 Chrome Steel Balls
Grade 25 chrome steel balls (52100 bearing steel) resist deformation and wear for consistent engagement over thousands of cycles.
📐 Anti-Vibration Engineering
The multi-ball contact pattern dampens oscillation and prevents the rattling common with single-point retention systems.
🔄 Compatibility Information
Fits 1 3/8″ Z6, 1 3/8″ Z21, and 1 3/4″ Z6/Z20 PTO shafts. Works with tractors from all major manufacturers. The ball detent is particularly well-suited for tractors with factory-standard ball-groove PTO stubs, common on AGCO, Fendt, Valtra, and Massey Ferguson models.
📚 Selection Guide
Step 1 — Check PTO Groove Type: Ball attachment yokes need a smooth, round-bottomed groove on the PTO shaft. Most modern tractors feature this. Older tractors with flat-bottomed grooves may not be compatible.
Step 2 — Select Ball Size: Φ13 for standard 1 3/8″ applications; Φ16 for heavy-duty 1 3/4″ applications.
Step 3 — Match Series: Bearing bore (A) determines cross kit compatibility.
🌾 Typical Application Scenarios
Multiple implement swaps per day: mower → tedder → rake → baler
Flail mowers, stone buriers, and other equipment generating high vibration
Frequently connected/disconnected for demonstrations and displays
Seasonal sprayer and pump applications requiring secure, quick-swap PTO connections
🛠 Installation & Usage Guide
- Slide release collar back: Pull the outer collar to retract the balls into the yoke body.
- Push yoke onto PTO shaft: Align splines and slide yoke home until the collar springs forward and balls snap into the groove.
- Verify by pulling: Tug the yoke firmly — the ball detent should resist with positive force.
- To remove: Slide collar back again to retract balls, then pull yoke straight off.
- Assemble PTO shaft: Connect cross kit and drive shaft components.
- Maintenance: Periodically clean ball seats and apply light oil to maintain spring responsiveness.
❓ Frequently Asked Questions
🌟 Customer Reviews
Craig W. — 🇦🇺 Australia
“Ball detent is brilliant. Much more secure than our old push pin yokes, and just as fast to connect/disconnect.”
Ulrich B. — 🇩🇪 Germany
“We tested pull-out force on a dynamometer — the ball attachment genuinely delivers 40% more than push pins. Impressive engineering.”
Fabio T. — 🇧🇷 Brazil
“Good design, solid construction. The collar operates smoothly even after dusty field conditions. Minor cost premium over push pins is worth it.”
Dan K. — 🇺🇸 United States
“Game-changer for our operation. We switch implements 6 times daily and the ball detent has never accidentally disengaged.”
Christophe V. — 🇫🇷 France
“The engineering quality is evident. Balls engage with a satisfying click and the holding force is impressive. Stocking these for all our PTO shafts.”
⚖ Our Product vs. Inferior Alternatives
| Feature | Ever-power | Low-Cost Alternatives |
|---|---|---|
| Retention Force | Multi-ball 360° interlock | Single push pin point contact |
| Vibration Resistance | Balls self-center in groove | Pin can bounce out |
| Operation Speed | Hand-operated, 3 seconds | Hand-operated, 3 seconds |
| Cycle Life | 15,000+ engagement cycles | 2,000-5,000 cycles |
| Ball Material | Grade 25 chrome steel 52100 | Mild steel or plastic |
| Groove Compatibility | Round-bottom groove (modern std) | Various groove types |
🔗 Related Products & Accessories
Replacement Ball Kits
Φ13 and Φ16 ball/spring replacement sets
Ball-Groove PTO Stub Shafts
Matching tractor-side PTO outputs
Cross-kit
Universal joints for all series
PTO Safety Shields
Guard assemblies for drive shaft protection
Explore our full PTO shaft components catalog for matching parts.
✅ Certifications & Quality Standards
- ISO 9001:2015 Certified
- Ball Pull-Out Force Testing (Dynamometer)
- Spring Cycle Life Testing (15,000+ cycles)
- Chrome Steel Ball Grade 25 Certificates
- Complete Dimensional CMM Reports
🏭 Why Choose Ever-power?
Our ball attachment yoke design is the result of extensive collaboration with Australian and European farming cooperatives who demanded a connection system faster than bolts but more secure than push pins. We invested in precision ball seat grinding equipment and spring force testing systems to guarantee consistent engagement quality. Over 100,000 ball attachment yokes shipped worldwide with a field failure rate below 0.02%.
Upgrade to Ball-Detent Quick-Couple Yokes
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