Bitzer BSE 55 Synthetic oil (POE)

Key Features and Benefits

100% Synthetic POE Blend: Provides high thermal and chemical stability essential for modern refrigeration systems.
Refrigerant Compatibility: Highly miscible with chlorine-free HFC refrigerants (like R134a, R404A, R407C, R507A, R410A) and low-GWP HFO refrigerants (like R1234yf, R450A, R513A).
Compressor Performance: Delivers optimal lubrication, oil return, and reduced oil carryover for improved heat transfer.
Additives: Contains special wear protection additives to extend compressor lifespan.
Non-Ammonia Use: Not designed for ammonia systems.

The BSE 55 is a high-quality synthetic lubricant developed for modern refrigeration, air conditioning, and heat pump systems.

Specification	Detail
Oil Type	Synthetic Polyolester (POE) Oil
Manufacturer	Bitzer
Viscosity Grade	Approximate ISO VG 68
Viscosity at $40^\circ\text{C}$	Approx. $68-70\ \text{cSt}$
Viscosity at $100^\circ\text{C}$	Approx. $9-11.3\ \text{cSt}$
Pour Point	Approx. $-41^\circ\text{C}$ to $-51^\circ\text{C}$
Flash Point	Approx. $280^\circ\text{C}$ to $293^\circ\text{C}$
Acid Value	$< 0.2\ \text{mg KOH/g}$
Density	Approx. $0.967$ to $1.010$ (at specific temperature)
Application	Refrigeration compressors (reciprocating and screw types)
Main Refrigerants	HFC and HFO refrigerants
Examples of Compatible Refrigerants	R-134a, R-404A, R-507A, R-407C, R-407A, R-407F, R-513A, R-450A, R-448A, R-449A, R-1234yf (HFOs)
Special Use Case	Recommended for HFC/HFO compressors where the condensing temperature ( $t_c$ ) is $> 55^\circ\text{C}$ (otherwise, BSE 32 may be used).

Compatibility: Excellent miscibility (ability to mix) with modern HFC and HFO refrigerants, ensuring efficient oil return and circulation through the system.
Stability: Offers superior thermal and chemical stability, crucial for maintaining lubrication in demanding operating conditions.
Low Hygroscopicity: While all POE oils are hygroscopic (absorb moisture), BSE 55 is formulated to be less hygroscopic than some other POE-based oils, which helps minimize water absorption and the risk of acid formation and internal corrosion.
Compressor Protection: Designed to minimize friction and wear, protecting internal compressor components and extending the compressor’s service life.
Quality: Exceeds the requirements of DIN 51503, Part 1, for refrigeration compressor oils in terms of water content and total acid number (TAN).

Technical detials	ISO Viscosity Grade = 55 Flash point =263 to 280 Pour point =-51 Viscosity at 40 °C =55 Viscosity at 100 °C = 9 Density =0.967 to 1.010
pack size	1L cane, 5Lcane, 10L cane, 208L drum

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