Description
Plain Bore Yoke Type F (Vertical Pin Hole) — Top-Access Pin Retention for Confined-Space Installations
The Plain Bore Yoke Type F-Vertical Pin Hole was born from a practical observation: on many implements, the PTO input shaft sits deep inside a housing or frame, with structural members blocking horizontal access from the sides. Technicians attempting to install or remove a standard Type A horizontal pin in these situations face frustrating, time-consuming work with limited tool access. The Type F solves this by rotating the pin hole 90° to vertical, allowing the pin to be inserted and removed from above — where access is almost always available. The result: what was a 15-minute struggle becomes a 30-second task.
🔧 Technical Specifications
| Series | A(mm) | B(mm) | C(mm) | D(mm) | E(mm) | F(mm) |
|---|---|---|---|---|---|---|
| 1.05F20-F31.8 | 22 | 54 | 77 | 15-18.5 | 20-31.8 | 6-10 |
| 2.05F20-F30 | 23.8 | 61.3 | 82 | 15 | 20-30 | 6-10 |
| 3.05F22-F35 | 27 | 70 | 90 | 20 | 22-35 | 8-13 |
| 4.05F22-F35 | 27 | 74.6 | 90 | 20 | 22-35 | 8-13 |
| 5.05F30-F40 | 30.2 | 80 | 98 | 20 | 30-40 | 10-13 |
| 6.05F30-F42 | 30.2 | 92 | 104 | 20 | 30-42 | 10-13 |
| 7.05F35-F45 | 30.2 | 106.5 | 117 | 25 | 35-45 | 13 |
| 8.05F35-F45 | 35 | 106.5 | 121 | 25 | 35-45 | 13 |
⭐ Key Features & Benefits
🔼 Vertical Top-Access Pin Hole
Pin inserts from above — no need for lateral access through machine frame or housing walls.
🕑 15-Minute Task → 30 Seconds
Eliminates the frustration of working blind in tight spaces. Pin installation is fast and straightforward.
🔧 One-Hand Operation
Hold the pin alignment with one hand, tap in from above — simple even in awkward positions.
📏 Same Bore Quality as Type A
Identical H7 CNC bore and forging quality. Only the pin hole orientation differs.
⚙ Retrofit Compatible
Direct replacement for Type A yokes on any shaft with a vertical pin hole provision.
💪 No Strength Compromise
The vertical orientation does not reduce pin shear strength — the pin cross-section and material are identical.
🔄 Compatibility Information
Fits cylindrical shafts with vertical pin hole provision in 20-45 mm range. Works with all implement and gearbox shaft designs that allow vertical pin access. Especially valuable for recessed gearbox inputs, mid-mount equipment, and machines with enclosed PTO housings.
📚 Selection Guide
Choose Type F when: The implement shaft is recessed inside a housing and horizontal pin access is restricted. Look at the installation from above — if you have vertical clearance, Type F is your solution.
Shaft Requirement: The shaft must have a vertical pin hole matching the yoke. Many modern gearboxes provide both horizontal and vertical provisions.
🌾 Typical Application Scenarios
Gearbox input shafts mounted inside enclosed gear housings with limited side access
Belly-mounted mowers and mid-frame implements where the PTO connection is beneath the tractor
Implements with structural members blocking horizontal access to the PTO input shaft
Applications where the pin is removed regularly — vertical access cuts maintenance time dramatically
🛠 Installation & Usage Guide
- Slide yoke onto shaft: Same as Type A — H7 bore provides smooth slip fit.
- Align vertical pin holes: Rotate yoke until the vertical holes in yoke and shaft align (top-down view).
- Insert pin from above: Drop or tap the roll pin through the vertical hole from the top.
- Verify pin seating: Ensure pin passes through both yoke and shaft and is flush with yoke surface.
- Assemble PTO shaft: Complete the drive line installation.
- For removal: Tap pin upward from below, or use a punch from above if a through-hole is provided.
❓ Frequently Asked Questions
🌟 Customer Reviews
Andrew C. — 🇦🇺 Australia
“Type F solved a persistent headache on our rotary hoe gearbox. The input shaft is recessed 150 mm inside the housing — vertical pin access made all the difference.”
Jürgen W. — 🇩🇪 Germany
“We specify Type F for all our enclosed gearbox designs. Customers love the easy top-access maintenance.”
Renato S. — 🇧🇷 Brazil
“Simple idea, big impact. Our field technicians no longer dread PTO yoke pin changes on recessed installations.”
Jeff M. — 🇺🇸 United States
“Changed to vertical pin yokes on our mid-mount mower PTO connections. What used to take 20 minutes now takes 1 minute.”
Isabelle C. — 🇫🇷 France
“Practical engineering at its best. Same quality as Type A, but the vertical orientation makes maintenance so much easier.”
⚖ Our Product vs. Inferior Alternatives
| Feature | Ever-power | Low-Cost Alternatives |
|---|---|---|
| Pin Access | Vertical — always accessible from above | Horizontal — may be blocked by frame |
| Maintenance Speed | 30 seconds typical | 5-20 minutes in tight spaces |
| Pin Strength | Identical to horizontal | Identical |
| Bore Quality | CNC H7, same as Type A | Same (when available) |
| Price | Same as horizontal pin type | Same |
| Quality System | ISO 9001:2015 | Varies |
🔗 Related Products & Accessories
Type A Pin-Hole Yokes
Horizontal pin version for open-access installations
Roll Pin Assortments
Standard spring pins for both Type A and F
Cross Kits
Universal joints for all series
PTO Shaft Components
Complete range of PTO parts
Explore our full PTO shaft components catalog for matching parts.
✅ Certifications & Quality Standards
- ISO 9001:2015 Certified
- Pin Hole Perpendicularity Verification
- H7 Bore Tolerance Reports
- Material Test Reports
- Hardness Certification
🏭 Why Choose Ever-power?
The Type F vertical pin yoke demonstrates our customer-driven product development approach. This design originated from direct feedback by Australian gearbox manufacturers who needed easier field service access. We developed, tooled, and launched Type F within 6 months of the initial request. Today, it is a standard catalog item that has improved maintenance efficiency for thousands of users worldwide.
Make PTO Maintenance Effortless
Switch to Type F vertical pin yokes for all your confined-space PTO connections. Same price, dramatically easier maintenance.
Visit ptoparts.top for our full product catalog
