Plain Bore Yoke Type A – Pin Hole – Round Bore PTO Shaft End Yoke
Plain round bore yoke | Type A | Multiple series | Forged alloy steel
The Ever-power Plain Bore Yoke Type A features a precision-reamed round bore with a transverse pin hole for straightforward shaft retention. A hardened roll pin or clevis pin passes through the yoke and shaft, providing a time-tested locking method that has served the agricultural sector for decades. The bore is finished to H7 tolerance, and the pin hole is jig-drilled perpendicular to the bore axis for accurate alignment.
🔧 Technical Specifications
| Series | A (mm) | B (mm) | C (mm) | E (mm) | F (mm) |
|---|---|---|---|---|---|
| 1.05A20 | 22 | 54 | 77 | varies | varies |
| 2.05A20 | 23.8 | 61.3 | 82 | varies | varies |
| 3.05A22 | 27 | 70 | 90 | varies | varies |
| 4.05A25 | 27 | 74.6 | 90 | varies | varies |
| 5.05A30 | 30.2 | 80 | 98 | varies | varies |
| 6.05A35 | 30.2 | 92 | 104 | varies | varies |
| 7.05A40 | 30.2 | 106.5 | 117 | varies | varies |
| 8.05A40 | 35 | 106.5 | 121 | varies | varies |
⭐ Key Features & Benefits
🔨
Transverse Pin Retention
Hardened roll pin passes through yoke and shaft for a reliable, proven locking method used across decades of agricultural practice.
🔄
H7 Precision Bore
Round bore reamed to H7 tolerance ensures minimal clearance and vibration-free rotation at 540 and 1000 RPM.
💪
Multiple Pin Diameters
Pin holes available in 6, 8, 10, 12, and 14 mm diameters to match your specific retaining pin requirements.
⚙️
Budget-Friendly Design
Simplest retention mechanism — fewer machined features translate to lower unit cost without sacrificing reliability.
🔄 Compatibility Information
Suitable for standard round (non-splined) PTO output shafts fitted with a transverse pin groove. Compatible with aftermarket tractor PTO shafts from John Deere, Massey Ferguson, New Holland, Kubota, and other major brands that offer pin-type shaft ends. Also widely used on custom-built industrial driveshafts where spline machining is not required.
📚 Selection Guide
Step 1: Use a micrometer to measure the PTO shaft outer diameter — this determines the yoke bore size.
Step 2: Identify the pin hole diameter on the shaft (commonly 6 mm or 8 mm for light duty; 10–14 mm for heavy duty).
Step 3: Match both bore and pin size to the specification table to select the correct series and model number.
Step 4: Confirm the yoke ear spacing and bearing cup diameter align with your cross kit.
🌾 Typical Application Scenarios
🌿 Light-Duty Rotary Mowers
Cost-effective PTO connection for small pasture mowers and lawn maintenance equipment.
💾 Water Pumps & Centrifugal Pumps
Simple pin retention suits fixed-installation PTO pump setups on farms and irrigation schemes.
⚙️ Custom Workshop Builds
Ideal for fabricators and workshops building one-off or small-batch driveline assemblies.
🐄 Grain Augers & Conveyors
Connects PTO to grain handling equipment where quick disconnect is not frequently needed.
🛠️ Installation & Usage Guide
Verify the shaft has a factory-drilled transverse pin hole; if not, drill one using a jig for accuracy.
Slide the Type A yoke onto the round shaft until the yoke pin hole aligns with the shaft hole.
Insert a hardened roll pin or clevis pin through both holes and secure with a cotter pin or spring clip.
Confirm the pin sits flush and the yoke does not rock on the shaft — any play indicates incorrect bore size.
Fit the cross-and-bearing kit into the yoke ears and fasten with snap rings.
Grease the cross kit zerks, then slowly rotate the driveline by hand to check for binding before PTO engagement.
❓ Frequently Asked Questions
▶ What type of pin should I use with Type A?
▶ Can I drill a pin hole in an existing shaft?
▶ Is Type A suitable for 1000 RPM PTO?
▶ How does Type A compare to Type B (keyway)?
▶ What if my shaft has no pin hole?
▶ Minimum order for Type A?
⭐ Customer Reviews
★★★★★
Needed a simple yoke for our water pump PTO setup near Wagga Wagga. Type A was perfect — affordable, reliable, and arrived in under a week.
Greg H. — 🇦🇺 Australia
★★★★★
We use Type A yokes for our workshop prototype builds. The H7 bore tolerance is excellent for the price.
Bernhard K. — 🇩🇪 Germany
★★★★☆
Straightforward product that does what it should. Pin retention is solid on our grain auger driveline.
Julien P. — 🇫🇷 France
★★★★★
Ordered 200 pieces for our pump assembly factory. Consistent bore quality and fast delivery to Mumbai.
Vikram S. — 🇮🇳 India
★★★★★
Type A is our go-to for custom PTO builds in the shop. Hard to beat on value and simplicity.
Dan R. — 🇺🇸 United States
📈 Our Product vs. Low-Quality Alternatives
| Feature | Ever-power Yoke | Low-Quality Alternative |
|---|---|---|
| Bore Finish | ✔ H7 precision-reamed | ✘ Rough-bored with visible tool marks |
| Pin Hole | ✔ Jig-drilled perpendicular ±0.1° | ✘ Hand-drilled with angular deviation |
| Material | ✔ Forged C45 alloy steel | ✘ Cast grey iron |
| Surface Coating | ✔ Zinc-plated | ✘ Bare uncoated metal |
| Hardness | ✔ Induction-hardened bore surface | ✘ No hardening |
| Quality | ✔ ISO 9001:2015 + CMM verified | ✘ No quality documentation |
🔗 Related Products & Accessories
Retaining Roll Pins
Hardened spring pins matched to yoke hole diameters
Cross & Bearing Kits
U-joint kits sized for Type A yoke ear spacing
PTO Safety Shields
Rotating guards for safe driveline operation
Plain Round Shafts
Precision-ground shafts with pre-drilled pin holes
Complete PTO Shafts
Assembled driveline packages with Type A yokes
🏆 Certifications & Standards
🏆
ISO 9001:2015
Quality management system certified by accredited body
🛡️
Material Test Reports
EN 10204 3.1 mill certificates for every steel batch
✅
CE Compliance
Meets European machinery safety directives
🔎
100% Inspection
Every yoke dimensionally verified before shipment
🏭 Why Choose Ever-power?
We are Ever-power, and our Type A plain bore yoke has been our entry-level best-seller for over 15 years. Its simplicity is its strength — a forged body, a precision bore, and a pin hole are all you need for reliable PTO power transfer. Manufactured on the same ISO 9001:2015 certified production lines as our premium splined and gear yokes, the Type A proves that affordability and quality are not mutually exclusive. We ship to 50+ countries, and our engineering team is available for custom bore and pin configurations.
📞 Ready to Order? Let’s Talk!
Whether you need a single replacement yoke or a container-load OEM order, our team is here to assist. Contact us for competitive pricing, rapid delivery, and expert technical support.
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