Vocke VKXS4A small four-cylinder semi-hermetic piston series — Zhejiang Vocke Refrigeration (Jinhua)

Datasheet

Product overview

Vocke VKXS4A small four-cylinder semi-hermetic piston series from Zhejiang Vocke Refrigeration (Jinhua)

VKXS4A is Vocke's small four-cylinder reciprocating refrigeration family, within its semi-hermetic piston product range. The manufacturer describes splash lubrication, suction/discharge valve-plate design, low-clearance-volume construction, maintainable components and motor-temperature/oil-level protection. It is separate from larger piston families described with a forced oil pump.

The model notation identifies XS as the series, 4 as the cylinder count and A as a 41 mm bore code. VKXS4A-3S uses the S medium/low-temperature motor designation, while VKXS4A-5H uses H for medium/high-temperature motor duty. The 3/5 entries indicate motor horsepower in the nomenclature, not refrigeration output. Confirm exact motor data and starting/electrical requirements against the current offered assembly.

Both named dimensional rows list length × width × height of 437 × 296 × 364 mm. VKXS4A-3S is listed at 71 kg and VKXS4A-5H at 74 kg. Published suction/discharge valve connection entries are 22 mm (7/8 inch) and 16 mm (5/8 inch). The dimensional drawing has additional mounting/interface positions; use the full current drawing when checking a replacement, rather than the envelope dimensions alone.

The original operating-range section covers R404A/R507A, R22 and R134a with separate refrigerant diagrams. That is catalogue compatibility information, not permission to use a refrigerant in every destination or proof of capacity at a proposed duty. Have the supplier confirm the exact model, refrigerant/oil pairing and allowed envelope for the project.

For a new cold-room unit, state the refrigeration load, evaporating/condensing temperatures, superheat, subcooling, supply and expected cycling. For replacement, also provide the old model/serial/nameplate, piping, mounting, refrigerant/oil and controller details. Request capacity/input at the actual point, protection-module and oil-level-control scope, heater requirements, installation/commissioning procedure and spares. Do not infer cooling capacity from the HP suffix or transfer the oil-pump arrangement of another series.

Catalog reference	VOCKE-VKXS4A
Machine	Refrigeration
Power	—
Working pressure	—
Published flow	—
Air quality	—
Duty	Cold chain
Supply	Not specified
Plant	Zhejiang Vocke Refrigeration (Jinhua)
Architecture	Small four-cylinder semi-hermetic reciprocating refrigeration
Lubrication	Splash; manufacturer describes motor-temperature/oil-level protection
Model notation	A bore code 41 mm; S medium/low-temperature motor; H medium/high-temperature motor
VKXS4A-3S	437 × 296 × 364 mm; 71 kg; motor notation 3 HP
VKXS4A-5H	437 × 296 × 364 mm; 74 kg; motor notation 5 HP
Valve connections	Suction 22 mm (7/8 inch); discharge 16 mm (5/8 inch)
Conditions	Exact refrigerant/oil, operating envelope, cooling capacity/input at selected duty
Replacement	Current mounting/valve drawing, nameplate and electrical/control interfaces