{"id":2545,"date":"2026-07-01T06:03:16","date_gmt":"2026-07-01T06:03:16","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/small-excavator-bulldozing-cylinder\/"},"modified":"2026-07-01T06:03:19","modified_gmt":"2026-07-01T06:03:19","slug":"small-excavator-bulldozing-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/ja\/product\/small-excavator-bulldozing-cylinder\/","title":{"rendered":"Small Excavator Bulldozing Cylinder"},"content":{"rendered":"

<\/p>\n

<\/p>\n

\n \"Small<\/p>\n
\n Small Excavator \u00b7 4th of 5<\/span><\/p>\n

Small Excavator Bulldozing Cylinder<\/h2>\n

Shortest stroke. Highest force. The dozer blade cylinder needs only 250 mm of travel \u2014 just enough to raise the blade above grade \u2014 but 453 KN of thrust to push 10 tonnes of machine through compacted soil. No other small excavator cylinder combines such extreme force with such minimal motion.<\/p>\n

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50\u2013140mm<\/span>Bore<\/span><\/div>\n
453 KN<\/span>Highest Thrust<\/span><\/div>\n
\u2264250mm<\/span>Shortest Stroke<\/span><\/div>\n
29.4 MPa<\/span>Pressure<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

Four Jobs from One Blade \u2014 Grading, Backfilling, Stabilising, and Travelling<\/span><\/h2>\n
\n \"Small<\/p>\n

The dozer blade on a small excavator is not a bulldozer \u2014 it is a multi-purpose rear attachment that the bulldozing cylinder raises, lowers, and floats across the ground surface. Despite its small size, the blade serves four distinct functions that make the excavator self-sufficient on most job sites:<\/p>\n<\/div>\n

\n
\n Backfilling trenches<\/strong><\/p>\n

After the excavator digs a utility trench and the pipe is laid, the blade pushes the spoil pile back into the trench \u2014 eliminating the need for a separate backfilling machine. The cylinder holds the blade at a controlled depth, and the machine drives forward, pushing the soil ahead.<\/p>\n<\/p><\/div>\n

\n Rough grading<\/strong><\/p>\n

The blade in “float” mode (the cylinder is depressurised, allowing the blade to follow the ground contour under its own weight) can spread soil, gravel, or crushed stone to a rough grade \u2014 preparing a surface for a concrete slab or pavement base without bringing in a grader.<\/p>\n<\/p><\/div>\n

\n Machine stabilisation<\/strong><\/p>\n

When digging at maximum reach, the blade is lowered to the ground behind the machine \u2014 acting as a third support point (with the two tracks) that prevents the excavator from tipping backward. The cylinder pushes the blade into the ground with the full 453 KN thrust, anchoring the machine.<\/p>\n<\/p><\/div>\n

\n Self-loading onto trailer<\/strong><\/p>\n

The blade, when lowered against the ground, can lift the rear of the machine \u2014 tilting it enough to climb a transport trailer ramp without the steep approach angle that would ground-out the machine’s undercarriage. The cylinder extends, the blade pushes, and the rear lifts.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

Korea Ever-Power manufactures the bulldozing cylinder as the fourth of five small excavator hydraulic cylinders<\/a>.<\/p>\n<\/section>\n

<\/p>\n

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Technical Specifications<\/span><\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product<\/td>\nSmall Excavator Bulldozing Cylinder<\/td>\n<\/tr>\n
Function<\/td>\nControl the action of the dozer blade (raise \/ lower \/ float)<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n50 mm \u2013 140 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n25 mm \u2013 80 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n\u2264 250 mm (shortest in family)<\/td>\n<\/tr>\n
Max Thrust<\/td>\n453 KN (bore 140 mm \/ 29.4 MPa) \u2014 highest in family<\/td>\n<\/tr>\n
Application<\/td>\nSmall Excavator (1\u201310 tonne class)<\/td>\n<\/tr>\n
Certification<\/td>\nISO 9001 \u00b7 100% hydrostatic tested<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n

<\/p>\n

\n
\n

140 mm Bore \u2014 Why the Blade Cylinder Is Larger Than the Boom Cylinder<\/h2>\n

The boom cylinder (#3) has a 125 mm maximum bore and produces 361 KN. The bulldozing cylinder has a 140 mm bore and produces 453 KN \u2014 25% more force. This seems counterintuitive: the blade is a small, simple attachment, while the boom lifts the entire arm assembly. The explanation lies in how each cylinder uses its force:<\/p>\n

\n
\n The boom lifts components \u2014 moderate gravity load<\/strong><\/p>\n

The boom cylinder lifts the arm assembly (500\u20133,000 kg). This is a gravitational load \u2014 the cylinder only needs to overcome weight \u00d7 lever arm. The force requirement is moderate and predictable.<\/p>\n<\/p><\/div>\n

\n The blade pushes the machine \u2014 total resistance force<\/strong><\/p>\n

When backfilling or grading, the blade pushes the entire 5\u201310 tonne machine through compacted soil. The resistance is not just gravity \u2014 it is soil shear strength \u00d7 blade width \u00d7 cutting depth + track friction + inertia. This total resistance force can exceed the gravitational loads on the arm assembly by 20\u201350%. Contact the Korea Ever-Power engineering team<\/a> for bulldozing force calculations.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n \"Small
\n<\/section>\n

<\/p>\n

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Manufacturing Process<\/span><\/h2>\n
\n \"Korea<\/p>\n

The 250 mm stroke produces a compact cylinder \u2014 overall retracted length approximately 400\u2013450 mm. The short, thick proportions (140 mm bore \u00d7 250 mm stroke) create a barrel that is stronger per unit length than any other small excavator cylinder, which is appropriate given the 453 KN thrust force and the ground-impact loading the blade experiences during grading and backfilling.<\/p>\n<\/div>\n

Bore honed to Ra 0.2\u20130.4 \u00b5m. Chrome plating 80 \u00b5m (the blade operates at ground level, exposed to soil, rocks, and abrasive contact). The blade’s pivot pin connection is forged and machined \u2014 not welded \u2014 because the short, heavy cylinder experiences high bending moments at the mounting points when the blade hits buried obstacles during grading. Seals rated -30 \u00b0C to +80 \u00b0C, polyurethane + NBR + double-lip wiper.<\/p>\n

Every bulldozing cylinder is hydrostatic tested at 1.5\u00d7 rated pressure (44.1 MPa) and drift-tested (the blade must hold its set height without creeping downward during grading operations).<\/p>\n<\/section>\n

<\/p>\n

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OEM & ODM<\/span><\/h2>\n
\n
\n
What You Provide<\/strong><\/div>\n
\n

Excavator model and weight class, blade width and weight, required lifting force, required pushing force (backfilling mode), stroke, bore\/rod or force requirement, system pressure, float-mode valve specification, pin diameters, and the blade linkage assembly drawing.<\/p>\n<\/div><\/div>\n

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What the Factory Delivers<\/strong><\/div>\n
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Engineering drawing with bore, rod (forged eye), 250 mm stroke, impact-rated barrel, float-mode port provisions, double-lip wiper, chrome plating 80 \u00b5m, and mounting dimensions. Hydrostatic + drift test certificate. Seal kits. Browse the mobile machinery hydraulic cylinder family<\/a> and the Korea Ever-Power catalogue<\/a>.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n

\"Workshop\"
\n<\/section>\n

<\/p>\n

\n

FAQ<\/span><\/h2>\n
\n
\n

Why only 250 mm of stroke?<\/h3>\n

The blade only needs to move from ground level (its working position) to approximately 200\u2013250 mm above grade (its travel position). There is no benefit to lifting the blade higher \u2014 it would increase the cylinder length and weight without adding functionality. The short stroke keeps the cylinder compact and reduces the hydraulic oil volume required per cycle.<\/p>\n<\/p><\/div>\n

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What is “float mode” and how does it affect the cylinder?<\/h3>\n

In float mode, both cylinder ports are connected to the tank \u2014 the cylinder is free to extend or retract under the blade’s own weight. The blade rests on the ground and follows the terrain contour as the machine drives forward. This mode is used for rough grading and surface spreading. The float valve is mounted externally on the machine’s valve block \u2014 the cylinder itself requires no special internal features for float mode, but the rod seal must handle the rapid pressure fluctuations that occur when the blade bounces over uneven surfaces.<\/p>\n<\/p><\/div>\n

\n

Do all small excavators have a dozer blade?<\/h3>\n

Most do \u2014 particularly in the 1\u20138 tonne class, where the blade is standard equipment. On larger small excavators (8\u201310 tonnes), the blade is sometimes optional. Some ultra-compact micro-excavators (under 1 tonne) omit the blade due to weight and width constraints. When present, the blade and its bulldozing cylinder add self-sufficiency \u2014 the excavator can dig, backfill, and grade without secondary machines. Browse telescopic cylinders<\/a> and forklift cylinders<\/a>.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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Related Categories<\/span><\/h2>\n
<\/p>\n
\n
\"Telescopic\"<\/div>\n
\n
Telescopic Hydraulic Cylinders \u2192<\/div>\n
Dump truck, trailer, hoist.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/p>\n

\n
\"Forklift\"<\/div>\n
\n
Forklift Hydraulic Cylinders \u2192<\/div>\n
Lift, tilt, steer \u2014 OEM.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/p>\n

\n
\"AWV\"<\/div>\n
\n
Aerial Work Vehicle Cylinders \u2192<\/div>\n
Scissor, boom, platforms.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/div>\n<\/section>\n

<\/main><\/p>","protected":false},"excerpt":{"rendered":"

Small excavator bulldozing cylinder \u2014 the hydraulic actuator that raises and lowers the rear-mounted dozer blade on 1\u201310 tonne mini and small excavators. The shortest stroke (\u2264250 mm) but the highest thrust (453 KN) in the small excavator cylinder family: short stroke because the blade only needs to lift a few hundred millimetres above grade, maximum thrust because the blade pushes the entire machine weight into the soil during backfilling and grading. Bore 50\u2013140 mm, 29.4 MPa. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2546,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[854],"product_tag":[],"class_list":["post-2545","product","type-product","status-publish","has-post-thumbnail","product_cat-mobile-machinery-hydraulic-cylinders","pa_editor-cxm","first","instock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/product\/2545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/comments?post=2545"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/media\/2546"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/media?parent=2545"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/product_brand?post=2545"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/product_cat?post=2545"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ja\/wp-json\/wp\/v2\/product_tag?post=2545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}