Plain Bore Yoke Type B-Keyway for PTO Shaft

The Plain Bore Yoke Type B-Keyway adds a precision-broached keyway slot to the cylindrical bore, enabling a key-and-keyway positive drive connection that absolutely prevents rotational slippage between the yoke and shaft. While Type A relies on pin shear strength for rotational drive, Type B transfers torque through the key’s flat bearing surfaces — distributing load more evenly and handling significantly higher torque ratings. Essential for high-torque gearbox connections and precision equipment where zero angular displacement is required.

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Description

Plain Bore Yoke Type B (Keyway) — Zero-Slip Keyed Connection for High-Torque PTO Applications

Plain Bore Yoke Type B-Keyway for PTO Shaft

The Plain Bore Yoke Type B-Keyway upgrades the standard cylindrical bore with a precision-broached keyway, transforming it from a pin-dependent to a key-driven connection. A standard parallel key seated in the matching keyway creates a positive mechanical interlock that transfers torque through compressive bearing surfaces rather than pin shear. This results in significantly higher torque capacity, zero rotational play, and predictable load distribution. Type B is specified for applications where rotational accuracy matters — gearbox inputs, precision equipment, and any shaft connection where even microscopic angular slippage is unacceptable.

🔧 Technical Specifications

Series A(mm) B(mm) C(mm) D(mm) E(mm) F(mm)
1.05B20 22 54 77 20 6 12.8
1.05B22 22 54 77 22 6 13.8
1.05B25 22 54 77 25 8 15.8
1.05B30 22 54 77 30 8 18.3
3.05B22 27 70 90 22 6 13.8
3.05B25 27 70 90 25 8 15.8
3.05B30 27 70 90 30 8 18.3
3.05B35 27 70 90 35 10 20.8
5.05B30 30.2 80 98 30 8 18.3
5.05B35 30.2 80 98 35 10 20.8
5.05B40 30.2 80 98 40 12 23.3
6.05B30 30.2 92 104 30 8 18.3
6.05B35 30.2 92 104 35 10 20.8
6.05B40 30.2 92 104 40 12 23.3
6.05B42 30.2 92 104 42 12 24.3
7.05B35 30.2 106.5 117 35 10 20.8
7.05B40 30.2 106.5 117 40 12 23.3
7.05B42 30.2 106.5 117 42 12 24.3
7.05B45 30.2 106.5 117 45 14 26.3
8.05B35 35 106.5 121 35 10 20.8
8.05B40 35 106.5 121 40 12 23.3
8.05B42 35 106.5 121 42 12 24.3
8.05B45 35 106.5 121 45 14 26.3

specifications

⭐ Key Features & Benefits

🔑 Precision-Broached Keyway

Machine-cut keyway slot to DIN 6885 standard ensures exact key fit and maximum load-bearing contact area.

💪 Superior Torque Transfer

Key-driven connection handles 2-3× the torque of an equivalent pin-hole yoke before any risk of failure.

⚖ Zero Angular Slippage

The key-and-keyway interlock eliminates rotational play — critical for timing-sensitive equipment like seed drills and precision applicators.

📐 DIN 6885 Standard Keys

Keyway dimensions correspond to standard key sizes (6×6 through 14×9 mm), ensuring readily available key stock.

🔧 Controlled Bore + Keyway

Both bore (H7) and keyway (P9/JS9) are machined to standard tolerances for predictable, repeatable assembly.

🔥 Hardened Keyway Surfaces

Keyway edges are induction hardened to resist peening and deformation under heavy cyclic loading.

🔄 Compatibility Information

Fits cylindrical shafts with standard DIN 6885 keyways in 20-45 mm diameter range. Compatible with gearbox inputs from all major manufacturers including Comer, Bondioli, Brevini, SEW-Eurodrive, and Nord Drivesystems. Also fits industrial pump, mixer, and conveyor drive shafts.

📚 Selection Guide

Step 1 — Measure Shaft & Keyway: Record shaft diameter, keyway width, and keyway depth. Match to the E, D, and F dimensions.

Step 2 — Verify Key Standard: Most applications use DIN 6885 parallel keys. Confirm your shaft uses this standard.

Step 3 — Select Appropriate Key Material: Standard C45 steel keys for normal duty. Stainless keys for corrosive environments.

selection guide

🌾 Typical Application Scenarios

⚙ Gearbox & Reducer Inputs
Right-angle gearboxes, speed reducers, and power distribution boxes requiring keyed shaft connections
🌱 Precision Equipment
Seed drills, precision planters, and metering devices where zero angular play is critical
💧 Industrial Pumps
High-torque pump drives where pin retention would be inadequate
🔧 Conveyor & Processing
Industrial conveyors, mixers, and processing machinery with keyed shaft inputs

🛠 Installation & Usage Guide

  1. Insert key into shaft keyway: Seat a standard DIN 6885 key into the shaft keyway first.
  2. Align yoke keyway: Orient the yoke so its keyway aligns with the key protruding from the shaft.
  3. Slide yoke onto shaft: Push the yoke onto the shaft, ensuring the key engages the yoke keyway smoothly.
  4. Secure axially: Use a set screw, circlip, or end plate to prevent axial movement (Type B does not include axial retention — add separately if needed).
  5. Check key fit: There should be no rotational play. If loose, the key may be undersized — replace with the correct size.
  6. Assemble PTO shaft: Install cross kit and remaining components.

❓ Frequently Asked Questions

Does Type B include axial retention?
No. The keyway provides rotational drive only. For axial retention, add a circlip, set screw, or use Type C (keyway + threaded hole) or Type D (keyway + clamp bolt).
What key material should I use?
Standard C45 steel for most applications. For 316 stainless in food/marine environments or hardened keys for extreme torque.
How much more torque can a keyway handle versus a pin?
Typically 2-3× depending on key and bore size, because the key transfers load through compression rather than shear.
Can I use Type B on a shaft without a keyway?
No. The shaft must have a matching keyway machined into it. If your shaft has only a pin hole, use Type A.
What is the keyway tolerance standard?
Keyways are broached to DIN 6885 with P9 or JS9 width tolerance, ensuring standard key fit.
Are the keys included with the yoke?
Keys are not included as they should be matched to the shaft keyway. Standard DIN 6885 keys are widely available.


விண்ணப்பம்

🌟 Customer Reviews

★★★★★

Murray T. — 🇦🇺 Australia

“The keyway broaching is clean and accurate. These yokes fit our gearbox input shafts with zero play when keyed. Excellent quality.”

★★★★★

Gerhard F. — 🇩🇪 Germany

“We specify Type B for all our precision equipment connections. The keyway tolerance is consistently within DIN spec.”

★★★★☆

Eduardo M. — 🇧🇷 Brazil

“Good keyed yoke at a fair price. The bore and keyway quality match European manufacturers.”

★★★★★

Bob R. — 🇺🇸 United States

“The step up from pin-hole to keyway makes a huge difference in our high-torque pump drive application. No more pin failures.”

★★★★★

Monique J. — 🇫🇷 France

“Broaching quality is excellent — clean cuts, no burrs. Key fit is precise. Using these on all our keyed shaft connections.”

⚖ Our Product vs. Inferior Alternatives

Feature Ever-power Low-Cost Alternatives
Torque Capacity 2-3× higher than pin-hole (key compression) Relies on pin shear strength
Rotational Play Absolute zero with proper key Slight play possible with worn pins
Keyway Quality DIN 6885 broached, P9 tolerance Poorly cut or off-standard
Bore Tolerance H7 CNC bored Rough-drilled
Material Forged 40Cr alloy steel Cast or mild steel
Certification ISO 9001:2015, DIN compliance No standards

🔗 Related Products & Accessories

Standard DIN 6885 Key Stock

Parallel keys in all standard sizes

Type C Yokes (Keyway + Set Screw)

Adds axial retention to the keyway connection

Type D Yokes (Keyway + Clamp Bolt)

Strongest keyed bore retention

Cross Kits

Universal joint kits for all series

Explore our full PTO shaft components catalog for matching parts.

Ever-power factory

✅ Certifications & Quality Standards

  • ISO 9001:2015 Certified
  • DIN 6885 Keyway Compliance
  • H7 Bore Verification
  • Keyway Surface Hardness Testing
  • CMM Dimensional Inspection

🏭 Why Choose Ever-power?

Our keyway broaching department operates 8 dedicated vertical broaching machines capable of cutting keyways in bore sizes from 15 mm to 60 mm. We process over 150,000 keyed yokes annually, making us one of the largest keyed bore yoke producers in Asia. Every keyway is cut in a single pass using premium HSS broach tools, ensuring consistent DIN 6885 compliance across every unit.

Upgrade to Keyed Connections for Maximum Torque

Type B keyway yokes provide the positive drive that pin-hole designs cannot match. Request a quote for your keyed shaft application.

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PTO ஷாஃப்ட் உற்பத்தியாளர்கள், வழங்குநர்கள் மற்றும் ஏற்றுமதியாளர்களில் ஒருவராக, நாங்கள் விவசாய PTO ஷாஃப்ட் தீர்வுகளை வழங்குகிறோம். PTO ஷாஃப்ட் தயாரிப்புகளை இங்கே கண்டறியுங்கள். உயர்தர PTO ஷாஃப்ட்கள் மற்றும் பாகங்களைத் தேர்ந்தெடுங்கள். ptoparts.top.
ஏதேனும் பதிப்புரிமை மீறல் இருந்தாலோ அல்லது ஆட்சேபனைக்குரிய தகவலைக் கண்டறிந்தாலோ, தயவுசெய்து எங்களைத் தொடர்புகொள்ளவும், நாங்கள் அதை உடனடியாக நீக்கிவிடுவோம். முகவரி: 27B ஹார்லி கிரசென்ட், காண்டெல் பார்க் NSW 2200, சிட்னி, ஆஸ்திரேலியா. அசல் உபகரண உற்பத்தியாளர் (OEM) பாக எண்கள் அல்லது வர்த்தக முத்திரைகளின் பயன்பாடு, தயாரிப்பின் பயன்பாடு மற்றும் இணக்கத்தன்மையை விவரிப்பதற்கும், சேதமடைந்த அசல் உபகரண பாகங்களை மாற்றுவதற்கும் மட்டுமேயான தகவல் நோக்கங்களுக்காகும். எங்கள் நிறுவனமும் இங்கு பட்டியலிடப்பட்டுள்ள மாற்றுப் பாகங்களும் OEM-ஆல் நிதியுதவி செய்யப்படவோ, அங்கீகரிக்கப்படவோ அல்லது தயாரிக்கப்படவோ இல்லை. Zqq ஆல் திருத்தப்பட்டது.