Cylinder Group 4T9977

Track Type Tractor Caterpillar D10N, D10R, D10T

Tilt Cylinder Bore 209,60 Stroke 660,00 Hydraulic Cylinder

4T-9977

247 kg

Compatible Brand: Caterpillar

Part Number: 4T-9977 (4T9977)

Superseded / Interchange Numbers: 4T-9977, 4T9977

Part Name: Large Mining Track-Type Tractor Blade Tilt Hydraulic Cylinder Group / Assembly

Teknik Özellikler / Technical Specifications: Bore: 209.60 mm / Stroke: 660.00 mm / Weight: ~247 kg / Hydraulic Cylinder

Compatible Machinery: Caterpillar Large Mining Track-Type Tractors / Dozers (D10N, D10R, D10T series)

What It Does:

Serves as the primary heavy-duty blade tilt hydraulic cylinder assembly mounted between the push arms and the heavy blade structure on Caterpillar D10 series large mining crawler tractors (dozers). Powered by high-pressure hydraulic fluid across a 209.60 mm bore and 660.00 mm stroke, it generates immense linear mechanical thrust and pull forces to tilt the massive dozer blade left or right, enabling aggressive corner cutting, rocky ground penetration, and precise pitch adjustment during tough earthmoving and ripping-pushing cycles.

Importance:

A critical kinematic and ultra-high-thrust hydraulic actuator essential for blade corner penetration force, cutting stability, and operational efficiency in demanding open-pit mining, quarrying, and overburden stripping applications. Engineered with a massive 247 kg heavy-walled barrel, high-tensile forged alloy rod, and reinforced cylinder head assembly, it effectively absorbs extreme cyclic shock thrusts, heavy torsional side-loads, and dynamic pressure spikes transmitted from blasted rock formations, while advanced heavy-duty seals prevent fluid bypass and cylinder drift under continuous extreme operating conditions.

As Seçkin Makine, we manufacture this product as an aftermarket item fully equivalent to the original specifications in terms of raw materials, technical dimensions, and performance characteristics. This product comes with a 1-year warranty from the invoice date.