توضیحات
Series 1
1-3/8″ 6-Spline (540 rpm)
22×54 mm Cross Kit
Interfering Clamp Bolt
High Vibration Rated
CE Certified
MOQ 1 pc — LGPD Ready
Series 1 Z6 Clamp Bolt PTO Yoke — Compatible Shaft Series
| Compatible Shaft | Series Type | Cross Kit | HP Range |
|---|---|---|---|
| تی۱ | T Series (Triangular) | 22×54 mm | up to 18 hp |
| L1 | L Series (Lemon) | 22×54 mm | up to 18 hp |
Overview
Product Description
Series 1 Clamp Bolt Splined Yoke is the tractor-end or implement-end connection component for Series 1 PTO drive shafts (T1/L1 class) where a permanent, tool-secured bolt fastening is required in place of a push-pin quick release. The interfering clamp bolt design bites into the spline bore wall as the bolt is tightened, creating a mechanically interlocked connection that does not depend on a spring-loaded retention mechanism.
The 22×54 mm cross-kit seat accepts the Series 1 needle-roller cross kit. The 1-3/8 inch 6-spline bore engages the standard Z6 540 rpm PTO stub or implement input shaft. Unlike the push-pin quick release version, the clamp bolt yoke does not require collar actuation for installation — the yoke is slid onto the shaft and the bolt is tightened to the specified torque. Removal requires a wrench, which is the intended characteristic: the clamp bolt yoke is not designed for daily disconnection.
Series 1 clamp bolt yokes are specified on OEM light-duty implement drivelines where the yoke is installed at the factory and removed only for scheduled maintenance or shaft replacement. For applications requiring daily connect/disconnect, specify the Series 1 Quick Release Yoke instead.
Clamp Bolt Locking Mechanism — Installation Procedure
The interfering clamp bolt bites into the spline bore wall when tightened, creating a mechanically locked connection independent of any spring element.
Clean and Align
Clean the spline bore and PTO stub. Align the yoke spline bore with the stub splines. Slide the yoke fully onto the stub until it is completely seated — no gap between yoke face and stub shoulder.
Insert and Hand-Tighten Bolt
Insert the clamp bolt through the yoke clamp collar. Hand-tighten until the bolt contacts the spline bore wall. Do not use impact tools at this stage — the bolt must be guided in straight.
Torque to Specification
Use a calibrated torque wrench. Tighten to 25–30 Nm for Series 1–5; 35–45 Nm for Series 6–8. Inspect and retorque at first 10 hours, then every 50 hours in high-vibration duty.
⚠ Clamp Bolt vs Quick Release — Choose the Right Locking Type
Clamp bolt: Use when the yoke remains connected for the season — OEM factory-fit, high-vibration implements, applications where removal requires tools by design. Quick release: Use when daily connect/disconnect is required. The cross-kit and dimensional specifications are identical between both variants at Series 1.
Dimensional Drawing — A / B / C / D Reference
A = Overall length | B = Cross pin diameter | C = Yoke width | D = Bore diameter. Refer to the compatibility table above for exact mm values.
End-face view of the 1-3/8″ Z6 bore (6-spline). Count the splines to confirm specification before ordering.
Cross-Reference Part Numbers
| Brand / Standard | Part Number / Reference | Notes |
|---|---|---|
| Weasler (North American) | 103-0106 | Clamp bolt / interfering bolt, B suffix |
| Sparex / Eurocardan (European) | S.7501 | Interfering clamp bolt, Series 1 Z6 |
| Bondioli & Pavesi (Italian) | 6.05.02 | AB1/A1 catalog reference |
| Ever-Power Drive Line (This product) | EPG-YK-CB-1-Z6 | EPG Series 1 CB Z6 |
Spline Profile Reference
Left: Z6 (6-spline, 540 rpm) — Centre: Z21 (21-spline, European) — Right: Z20 (20-spline, 1,000 rpm)
Key Features
Interfering Clamp Bolt Lock
The bolt threads into the yoke clamp collar and bites into the spline bore wall when tightened, creating a mechanically interlocked connection. Unlike a spring-loaded push-pin, the clamp bolt connection does not depend on any spring element — there is no spring to fatigue, no collar to wear, and no retention pin to lose in field conditions.
High Vibration Resistance
The bolt-secured connection maintains its clamping force under sustained vibration loads that cycle a push-pin spring mechanism. Specified for rotary cutters, forage harvesters, and high-duty-cycle implements where vibration fatigue is a concern over 300+ hour operating seasons. Retorque inspection at 50-hour intervals ensures sustained clamping force.
1-3/8″ Z6 Spline Bore
Standard 540 rpm agricultural interface — fits all Z6 PTO stubs worldwide. Induction-hardened spline bore for long-term engagement durability.
22×54 mm Cross-Kit Seat
Precision-machined cross-kit bearing cup bores hardened to accept 22 mm pin diameter needle-roller cross-kit cups. Cross kit (code 1.01) is shared with the Quick Release version at Series 1 — one part number covers both variants.
20CrMnTi Forged Steel Body
Drop-forged chromium-manganese-titanium alloy steel yoke body, normalised and induction-hardened at the bearing seat bores. Phosphate surface coating provides corrosion resistance in outdoor agricultural conditions. Clamp bolt collar is machined integral with the yoke body — no separate clamp ring to lose or misalign.
CE Certified — LGPD Ready
CE Declaration of Conformity and ISO 9001:2015 documentation included with every shipment. LGPD data handling compliance for Brazil import submissions. SGS third-party inspection available for contract orders.
Typical Applications
Series 1 CB Z6 — permanent-mount tractor-end connection for up to 18 hp implements
OEM Light-Duty Implement Assembly
Series 1 clamp bolt yokes are factory-fitted on compact tiller and seeder drivelines where the yoke is installed at manufacture and removed only for scheduled maintenance.
Compact Auger Drives — Permanent Mount
Post hole auger and grain auger drive connections where the implement-end yoke is permanently clamped and the tractor-end uses quick release for daily connection.
Walk-Behind Implement Drivelines
Light-duty walk-behind implement PTO connections requiring a bolt-secured yoke at the implement end for permanent drive assembly.
Installation Steps
Verify Series and Spline
Confirm your PTO shaft is Series 1 (22×54 mm cross kit) and your tractor PTO stub is Z6 (1-3/8″ 6-spline). Count the splines to confirm.
Clean Stub and Bore
Remove all rust, debris, and old lubricant from both the PTO stub and the yoke spline bore. Clean mating surfaces ensure maximum contact area and correct bolt seating.
Slide and Seat Yoke
Align splines and push the yoke fully onto the stub until the yoke face contacts the stub shoulder. Full seating is essential before bolt tightening — a partially seated yoke will not lock correctly.
Torque the Clamp Bolt
Insert the clamp bolt and tighten with a calibrated torque wrench to 25–30 Nm (Series 1–5) or 35–45 Nm (Series 6–8). Do not use impact tools. Verify bolt is fully threaded before torquing.
Anchor Shield and Inspect
Connect the shaft safety shield chains to non-rotating points on tractor and implement. Inspect the bolt after the first 10 hours of operation and retorque to specification. Reinspect every 50 hours in high-vibration duty.
Frequently Asked Questions
- —Use clamp bolt when the yoke will remain connected for an entire season or longer — it does not require daily disconnection
- —Use clamp bolt for high-vibration applications where push-pin spring fatigue is a concern
- —Use clamp bolt for OEM factory-fit applications where removal requires a wrench by design
- —Use quick release when the yoke is connected and disconnected frequently — daily implement changes
- —Series 1 cross kit: 22×54 mm, code 1.01
- —Identical to the Series 1 Quick Release yoke — one cross kit covers both variants
- —Available from the Cross Kit product page
- —Standard bolt torque: 25–30 Nm for series 1–5; 35–45 Nm for series 6–8
- —Always torque to specification — under-torqued bolts allow yoke movement; over-torqued bolts can crack the yoke body
- —Inspect and retorque at 50-hour intervals for high-vibration applications
- —Yes — Series 1 clamp bolt fits the same shaft assemblies: T1 / L1
- —The cross-kit seat dimensions are identical between QR and CB variants at the same series
- —The spline bore profile is also identical — the difference is only in the locking mechanism
- —Italian series (Bondioli & Pavesi): see Cross-Reference table above
- —Sparex and Eurocardan part numbers also listed in the Cross-Reference section
- —The ‘Interfering Bolt’ terminology in European catalogs refers to the same product as ‘Clamp Bolt’ in North American terminology
Customer Reviews
Bruno A.
Paraná, Brazil — Implement OEM
★★★★★
- Series 1 clamp bolt fitted as standard on our driveline assembly — no push-pin wear after full season
- CE documentation complete — straightforward import compliance
- Consistent dimensions across batches — no fitment issues
Camila V.
Buenos Aires, Argentina — Parts Distributor
★★★★★
- Series 1 CB stocked alongside QR — sells as OEM replacement for European implements
- Interfering bolt references (Italian AB series) match exactly
- Lead time within 9 days for stock orders
Shipping and Order Information
MOQ
1 pc from stock
50 pcs custom / OEM
Lead Time
7–10 days (stock)
20–30 days (OEM)
Shipping
Sea / Air to Brazil
South America
Trade Terms
FOB Ningbo
CIF Santos available
گواهینامهها
CE Certified
ایزو ۹۰۰۱:۲۰۱۵
تیاس/۱۶۹۴۹
SGS InspectionLGPD Compliant
