Danfoss have majorly 2 series of variable piston Pump for Open loop. Series 45 and D1P series.
Series 45 is a complete family of high performance variable displacement, axial piston pumps. Each frame
is designed to exceed the demanding work function requirements of the mobile equipment marketplace.
Each frame within the Series 45 family is uniquely designed to optimize performance, size, and cost.
The pump included in this series are
LRR25, LRR30, KRR38, KRR45, K2RR25, K2RR30, K2RR38, K2RR45, JRR45, JRR51, JRR60, JRR65, JRR75, HRR47, HRR57, HRR75, FRR074, FRR090, ERR100, ERR130, ERR147
Series D1 pump is a high performance variable axial piston pump, it is designed primarily for open circuit
hydraulic systems used in heavy duty mobile applications.
Pumps in Series D1P are
D1P130, D1P145, D1P193, D1P260