{"id":2021,"date":"2026-03-19T09:16:14","date_gmt":"2026-03-19T09:16:14","guid":{"rendered":"https:\/\/driveshaftjoint.com\/?post_type=product&p=2021"},"modified":"2026-03-19T09:46:31","modified_gmt":"2026-03-19T09:46:31","slug":"ep-4-0513b-release-pto-shaft-yoke","status":"publish","type":"product","link":"https:\/\/driveshaftjoint.com\/ms\/product\/ep-4-0513b-release-pto-shaft-yoke\/","title":{"rendered":"Quick Release PTO Shaft Yoke 3-Ball Collar 1045C Steel"},"content":{"rendered":"
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EP-4.0513B Quick Release PTO Shaft Yoke \u2014
\n3-Ball Collar \u00b7 Forged 1045C \u00b7 Tractor Driveline<\/span><\/h1>\n

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Part No. EP-4.0513B<\/span>
\nForged 1045C Steel<\/span>
\n3-Ball Collar<\/span>
\n3 kg<\/span>
\n1-Year Warranty<\/span><\/div>\n

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\nRequest a Quote \u2192
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\nView Specs \u2193
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EP-4.0513B Quick Release PTO Shaft Yoke \u2014 Product Overview<\/h2>\n

The EP-4.0513B<\/strong> is a quick release PTO shaft yoke<\/strong> manufactured from forged 1045C medium-carbon steel \u2014 a material grade chosen for its combination of tensile strength, impact resistance, and machinability. It connects the PTO shaft to a tractor’s power take-off stub or an implement’s input shaft, and the 3-ball collar mechanism<\/strong> allows the yoke to be engaged and disengaged without tools, significantly reducing coupling time in the field compared to bolt-type or snap-ring yokes.<\/p>\n

At 3 kg<\/strong>, the EP-4.0513B is engineered to keep driveline rotating mass within acceptable limits for balanced operation, while the forged construction ensures the yoke body can withstand the cyclic torsional loading and shock events common in agricultural and industrial PTO applications. Each unit ships with a one-year manufacturer warranty<\/strong>.<\/p>\n

This yoke is a direct-fit replacement for G Series and compatible PTO shaft assemblies, and is available for B2B wholesale orders. OEM packaging and custom quantity pricing are available on request.<\/p>\n

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\"EP-4.0513B<\/div>\n<\/div>\n

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Technical Specifications \u2014 PTO Shaft Yoke EP-4.0513B<\/h2>\n

All critical parameters for procurement, compatibility verification, and engineering specification.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Part Number<\/td>\nEP-4.0513B<\/td>\n<\/tr>\n
Yoke Type<\/td>\nQuick Release Yoke with 3-Ball Collar<\/td>\n<\/tr>\n
Material<\/td>\nForged 1045C Medium-Carbon Steel<\/td>\n<\/tr>\n
Collar Mechanism<\/td>\n3-Ball Quick Release<\/td>\n<\/tr>\n
Unit Weight<\/td>\n3 kg<\/td>\n<\/tr>\n
Application<\/td>\nPTO Shaft Driveline \u2014 Tractor & Agricultural Implements<\/td>\n<\/tr>\n
Series Compatibility<\/td>\nG Series PTO Shaft (cross kit ref. 4.01 group)<\/td>\n<\/tr>\n
Surface Treatment<\/td>\nPhosphated + painted (rust inhibitor coating)<\/td>\n<\/tr>\n
Warranty<\/td>\n1 Year<\/td>\n<\/tr>\n
OEM \/ Custom<\/td>\nAvailable on request<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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6 Key Features of the EP-4.0513B Quick Release Yoke<\/h2>\n
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3-Ball Quick Release Collar<\/div>\n

The 3-ball detent collar locks onto the PTO stub shaft securely and releases by pulling back the collar sleeve \u2014 no tools required. Coupling and decoupling takes under 5 seconds, versus 30\u201390 seconds for bolt or snap-ring yoke types. Critical time saving in multi-implement operations.<\/p>\n<\/div>\n

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Forged 1045C Steel Construction<\/div>\n

1045C medium-carbon steel is forge-pressed \u2014 not cast \u2014 producing a grain-refined microstructure with tensile strength of approximately 620\u2013850 MPa depending on heat treatment. Cast yokes of equivalent weight exhibit significantly lower impact resistance at the yoke ear walls, which are the primary stress concentration points under torsional loading.<\/p>\n<\/div>\n

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Precision Bore & Spline Machining<\/div>\n

The bore and spline profile are CNC-machined after forging to achieve tight dimensional tolerances on the mating surfaces. This ensures correct cross kit bearing journal alignment and eliminates the angular play that accelerates cross kit wear in lesser-quality yokes manufactured to wider tolerance bands.<\/p>\n<\/div>\n

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3 kg Optimised Mass<\/div>\n

At 3 kg, the EP-4.0513B keeps rotating unsprung mass within the balance requirements for smooth PTO shaft operation. Excessively heavy yokes increase dynamic load on cross kit bearings during rotation; underweight yokes sacrifice material section at the ears. This grade balances both constraints for the G series torque range.<\/p>\n<\/div>\n

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Rust-Inhibitor Surface Coating<\/div>\n

Phosphate conversion coating plus paint finish provides a baseline layer of corrosion protection against field moisture, mud, and agricultural chemical exposure. Phosphating also improves paint adhesion and provides a micro-porous lubricant-retention surface on the bore ID, reducing collar mechanism wear during repeated engagement cycles.<\/p>\n<\/div>\n

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Direct OEM Replacement<\/div>\n

The EP-4.0513B is manufactured to the G Series cross kit and shaft assembly standards, making it a direct dimensional replacement for worn or damaged OEM yokes in the 4.05 yoke family. Compatible with 1-3\/8″ 6-spline and other standard profiles depending on bore specification \u2014 confirm spline count before ordering.<\/p>\n<\/div>\n<\/div>\n

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How to Remove a Yoke from a PTO Shaft \u2014 5-Step Procedure<\/h2>\n

Yoke removal is straightforward when done in sequence. Working out of order \u2014 particularly attempting to pull the yoke before releasing the fastener \u2014 is the leading cause of damaged shaft splines and collar mechanisms.<\/p>\n

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1<\/div>\n
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Secure the PTO Shaft<\/div>\n

Clamp the PTO shaft in a bench vise using protective jaw pads to prevent surface damage. If no vise is available, block the shaft firmly against a fixed surface \u2014 it must not rotate while you apply force to the yoke. Attempting removal on an unsecured shaft risks injury and shaft damage.<\/p>\n<\/div>\n<\/div>\n

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2<\/div>\n
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Identify the Fastening Mechanism<\/div>\n

Examine the yoke to determine how it is retained on the shaft. The EP-4.0513B uses a 3-ball collar mechanism<\/strong>. Other yokes may use a shear pin, roll pin, snap ring, or bolt. Identifying the correct fastener before attempting removal prevents damage \u2014 using the wrong tool on a ball collar can shear the collar sleeve permanently.<\/p>\n<\/div>\n<\/div>\n

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3<\/div>\n
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Release the Fastener<\/div>\n

Quick release collar (EP-4.0513B):<\/strong> pull back the collar sleeve firmly toward the implement side and hold it retracted while pulling the yoke off the shaft. The 3 balls retract into the collar body, releasing the groove lock. Shear\/roll pin:<\/strong> drive out with a correctly sized pin punch and hammer \u2014 never an oversized punch that will deform the pin hole. Snap ring:<\/strong> use snap ring pliers; never a screwdriver, which can launch the ring at high velocity. Bolt:<\/strong> apply penetrating oil first if corroded; use the correct socket \u2014 stripped bolt heads require extraction tools.<\/p>\n<\/div>\n<\/div>\n

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4<\/div>\n
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Slide Off the Yoke<\/div>\n

With the fastener fully released, slide the yoke straight off the shaft end. If it resists, do not force it with excessive hammer blows directly on the yoke body \u2014 this deforms the bore. Instead, apply penetrating oil (e.g., WD-40 or Kroil) at the yoke-to-shaft interface and allow 10\u201315 minutes to soak. Then tap lightly around the yoke with a rubber mallet to break the corrosion bond. An internal yoke puller tool is the most controlled method for stubborn yokes.<\/p>\n<\/div>\n<\/div>\n

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5<\/div>\n
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Inspect, Clean, and Assess<\/div>\n

After removal, inspect the shaft spline for wear, twisting, or pitting. Check the yoke bore for ovality \u2014 a yoke bore that is no longer round indicates overload or impact damage and the yoke should be replaced. Clean both components with a wire brush and solvent. Apply a light coat of anti-seize compound to the shaft spline before fitting the replacement yoke to prevent future corrosion bonding.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\u26a0 Safety note:<\/strong> Always disengage the PTO, shut off the tractor engine, and wait for all rotating parts to come to a complete stop before performing any yoke removal work. Never work on a live or coasting driveline.<\/div>\n

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Where the EP-4.0513B Quick Release Yoke Is Used<\/h2>\n

The quick release PTO shaft yoke is specified wherever fast implement changeover matters and the 4.05 yoke family cross kit standard is in use.<\/p>\n

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\ud83d\ude9c<\/span><\/p>\n

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Agricultural Tractors<\/div>\n
Primary application. Connects tractor PTO stub to G Series driveline on mowers, balers, tillers, sprayers, and augers. The quick release collar reduces implement swap time from minutes to seconds in multi-tool operations.<\/div>\n<\/div>\n<\/div>\n
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\ud83c\udf3e<\/span><\/p>\n

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Hay & Forage Equipment<\/div>\n
Round balers, square balers, mower-conditioners, and tedders that use G Series PTO shafts. The 3-ball collar allows rapid engagement in wet field conditions where gloves must be worn and precision tool use is impractical.<\/div>\n<\/div>\n<\/div>\n
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\ud83c\udf3f<\/span><\/p>\n

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Rotary Cutters & Mulchers<\/div>\n
Flail shredders and rotary cutters require frequent PTO shaft removal for blade maintenance and transport. The quick release collar makes this a one-person job without additional hardware.<\/div>\n<\/div>\n<\/div>\n
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\ud83c\udfd7<\/span><\/p>\n

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Construction & Industrial PTO<\/div>\n
Post-hole diggers, hydraulic pump drives, cement mixers, and other tractor-mounted industrial equipment using G Series PTO driveline components where 4.0513B yoke geometry applies.<\/div>\n<\/div>\n<\/div>\n
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\ud83d\udd27<\/span><\/p>\n

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OEM & Aftermarket Repair<\/div>\n
Direct replacement for worn or damaged 4.0513B yokes in existing G Series shaft assemblies. Stocked by agricultural dealers and driveline service workshops as a high-turnover repair component.<\/div>\n<\/div>\n<\/div>\n
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\ud83d\udce6<\/span><\/p>\n

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B2B Wholesale Supply<\/div>\n
Available in bulk for machinery dealers, PTO shaft manufacturers, and repair workshops. Consistent forging quality and dimensional tolerances support assembly-line fitting without rework. OEM packaging available.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Frequently Asked Questions \u2014 EP-4.0513B Quick Release PTO Shaft Yoke<\/h2>\n
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\nWhat is a 3-ball collar quick release yoke and how does it work?
\n\uff0b<\/span><\/summary>\n
A 3-ball collar yoke uses three hardened steel balls seated in a collar ring around the bore. When the collar sleeve is in the forward position, the balls are pushed inward into a groove on the PTO stub shaft, locking the yoke in place. Pulling the collar sleeve back retracts the balls outward, releasing the groove lock and allowing the yoke to slide free. No tools, no pins to lose, no bolts to strip \u2014 engagement and release in under 5 seconds.<\/div>\n<\/details>\n
\nIs the EP-4.0513B compatible with my tractor’s PTO stub shaft?
\n\uff0b<\/span><\/summary>\n
Compatibility depends on the bore diameter and spline profile of your tractor’s PTO stub shaft. The EP-4.0513B is designed for the G Series 4.05 yoke family \u2014 confirm that your stub shaft spline count, diameter, and groove position match the 4.0513B specification before ordering. Common stub shaft standards include 1-3\/8″ 6-spline and 1-3\/8″ 21-spline \u2014 these are not interchangeable. Contact us with your tractor make, model, and PTO spec for a direct compatibility check.<\/div>\n<\/details>\n
\nWhy choose forged 1045C over cast yokes?
\n\uff0b<\/span><\/summary>\n
Forging aligns the steel’s grain structure to follow the yoke geometry, resulting in higher fatigue resistance at the yoke ear walls \u2014 the highest-stress zone during torsional loading. Cast yokes have random grain orientation and are more prone to brittle fracture under shock loads (rock strikes, slug events). For PTO applications, forged 1045C consistently outlasts cast alternatives of equivalent weight under field shock-load conditions.<\/div>\n<\/details>\n
\nHow do I maintain the 3-ball collar mechanism to prevent seizing?
\n\uff0b<\/span><\/summary>\n
Clean the collar mechanism at the start of each season or after working in heavy mud or chemical spray environments. Apply a small amount of NLGI #2 grease or light machine oil to the ball seats and collar bore \u2014 do not pack the collar with heavy grease as this can prevent the balls from retracting fully. If the collar sleeve becomes stiff, apply penetrating oil and work it back and forth before attempting to force it. A seized collar that is forced will shear the ball seats permanently, requiring full yoke replacement.<\/div>\n<\/details>\n
\nWhat is the minimum order quantity and do you offer B2B pricing?
\n\uff0b<\/span><\/summary>\n
Single units are available for replacement purchases. B2B wholesale pricing applies from 10 units upward, with volume tiers at 50 and 200+ units. OEM packaging and private label options are available for machinery dealers and PTO shaft manufacturers at MOQ 100 units. Contact sales@driveshaftjoint.com with your required quantity and delivery destination for a tiered pricing schedule within 24 hours.<\/div>\n<\/details>\n<\/div>\n

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What Buyers Say About the EP-4.0513B PTO Shaft Yoke<\/h2>\n
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MT<\/div>\n
\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span><\/div>\n<\/div>\n
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“We stock the 4.0513B in our workshop as a standard repair item. The forging quality is consistent batch to batch \u2014 we’ve had zero bore ovality issues on incoming inspection across three separate shipments totalling 180 units. The collar mechanism engages cleanly and releases without sticking even after a season of field use. Solid component.”<\/p>\n

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M. Thornton<\/div>\n
Workshop Manager \u2014 Agricultural Machinery Dealer, Wagga Wagga NSW, AU<\/div>\n
Verified B2B \u00b7 EP-4.0513B \u00d7 180 units<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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KV<\/div>\n
\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span><\/div>\n<\/div>\n
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“We integrated the EP-4.0513B into our G Series PTO shaft assembly line last season. Dimensional consistency is within our \u00b10.08 mm tolerance spec \u2014 no rework required on any of the 320 yokes we’ve processed. The 3-ball collar mechanism passes our 200-cycle engagement test without measurable wear on the ball seats. For an aftermarket forged yoke at this price point, the tolerance control is genuinely better than we expected.”<\/p>\n

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K. Vandermeer<\/div>\n
Production Engineer \u2014 PTO Shaft Manufacturer, Utrecht, NL<\/div>\n
OEM Verified \u00b7 EP-4.0513B \u00d7 320 units<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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DR<\/div>\n
\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span><\/div>\n<\/div>\n
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“My old yoke required a hammer, two screwdrivers, a prayer, and apparently the specific alignment of Jupiter to get it off the shaft. I’d dread implement swaps. Got the 3-ball collar version \u2014 now I swap my baler and rotary cutter so fast my son thinks I’ve been secretly practicing. I have not been secretly practicing. It’s just that good. Bought four more.”<\/p>\n

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D. Riordan<\/div>\n
Cattle & Hay Farmer \u2014 Madison County, Nebraska, USA<\/div>\n
Verified Purchase \u00b7 EP-4.0513B \u00d7 5 units<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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LB<\/div>\n
\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span>\u2605<\/span><\/div>\n<\/div>\n
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“We distribute PTO shaft components across 14 countries. The EP-4.0513B is one of our highest-volume SKUs because it fits the most common G Series application profile and the quick release feature has become a buyer expectation \u2014 nobody wants to deal with pin yokes anymore. Lead time has been consistent at 12\u201315 days for standard volumes and the packaging holds up to container shipping without the bore surface getting dinged.”<\/p>\n

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L. Beaumont<\/div>\n
Procurement Director \u2014 Agricultural Parts Distributor, Lyon, FR<\/div>\n
B2B Verified \u00b7 EP-4.0513B \u2014 ongoing supply<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Ready to Order?<\/div>\n

Order the EP-4.0513B Quick Release PTO Yoke.
\nSingle Units to Full Pallet \u2014 Quote in 24 Hours.<\/span><\/h2>\n

Whether you need a single replacement yoke or a B2B bulk order for your dealership or assembly line \u2014 send us your quantity and shipping destination and we’ll return a full quote within one business day.<\/p>\n


\nRequest a Quote \u2192
\n<\/a>
\n
\n\u2190 Back to PTO Accessories
\n<\/a><\/div>\n

OEM & wholesale pricing available \u00b7 Custom quantities & packaging \u00b7 Ships worldwide<\/p>\n<\/div>\n<\/div>\n

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quick release PTO shaft yoke \u00b7 EP-4.0513B yoke \u00b7 3-ball collar PTO yoke \u00b7 forged 1045C PTO yoke \u00b7 tractor PTO shaft yoke parts \u00b7 G series yoke replacement \u00b7 PTO yoke quick release collar \u00b7 agricultural driveline yoke supplier \u00b7 how to remove yoke from PTO shaft \u00b7 B2B PTO shaft components<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

The Quick Release PTO Shaft Yoke is engineered for efficient and secure driveline connections in agricultural applications. Featuring a 3-ball collar mechanism, it allows fast, tool-free attachment and removal, significantly reducing downtime during equipment changeovers. Manufactured from forged 1045C medium-carbon steel, it delivers excellent strength, durability, and resistance to impact under heavy load conditions. Precision machining ensures accurate fitment with standard PTO shaft systems, minimizing vibration and wear. Ideal for tractors, mowers, balers, and other PTO-driven equipment, this yoke is a reliable solution for both OEM assembly and aftermarket replacement needs.<\/p>","protected":false},"featured_media":2022,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1127,1140],"product_tag":[],"class_list":{"0":"post-2021","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-drive-shafts","7":"product_cat-pto-shaft-yokes","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/product\/2021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/comments?post=2021"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/media\/2022"}],"wp:attachment":[{"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/media?parent=2021"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/product_brand?post=2021"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/product_cat?post=2021"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ms\/wp-json\/wp\/v2\/product_tag?post=2021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}