Parker Denison T7BBS-B20-B14-1R00-A100M277859 Hydraulic Pump – 024-77859-0

Series-specific model code

Original model: T7BBS-B20-B14-1R00-A100M277859

Code coverage: Evidence-supported meanings shown. Confirmation required for remaining configuration.

Evidence profile: T7BBS exact single/double/triple ordering-code profile (HY29-0001/UK evidence revision 6)

Code segment	Evidence-bound meaning
T7BBS	Series: T7BBS.
B20	Shaft-end pump core (B family) displacement code: B20. Contact us to confirm.
B14	Cover-end pump core (B family) documented displacement: 45.0 cm3/rev.
1	Shaft code 1: keyed non-SAE shaft.
R	Rotation: right-hand (clockwise), viewed from the shaft end.
00	Porting code: 00 (standard porting).
A	Design letter: A.
1	Seal code 1: S1 BUNA N seal class.
00	Connection/modification code: 00.
M277859	Unresolved value after the documented design/seal fields: M277859. Contact us to confirm.

The exact longest series prefix determines the number and family of pump-core slots. Displacement codes are decoded only through the family table printed for that slot; identical codes are not generalized across A-AS, A-ASW, B, C, D or E cores. Shaft identity remains tied to the complete series. R/L is interpreted from the shaft-end view. Porting 00 is standard; other catalog-shaped porting codes are retained and require physical-orientation confirmation. Unsupported families and unknown special tails fail closed without blocking earlier evidence-supported fields.