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H MOTOR HP SHAFT SEAL 14778-1

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Description & Features

Designed for use with Char-Lynn H series hydraulic motors, this high-pressure shaft seal provides a reliable sealing solution at the motor output shaft interface. Shaft seals in this application prevent fluid bypass and maintain internal pressure integrity under demanding rotary conditions.

The H Motor HP Shaft Seal 14778-1 is a direct-fit replacement component, sourced from Char-Lynn to ensure dimensional and material compatibility with the original motor assembly. It is suited for hydraulic drive applications where maintaining a clean, leak-free shaft interface is critical to consistent motor performance.

SKU: 101-2638-009

Supplier Part Number (MPN): 101-2638-009

Specifications

Brand
Danfoss
Bearing Type
Hydrodynamic Journal
Check Valve Function
Without Check Valve Function
Color
Black
Design Code
9
Dimensions
7.2 in L x 5.27 in W x 3.87 in H
Frame Size
185
Housing Material
Iron
Mounting Type
2-Bolt Flanged
Orbital Gearwheel Set
Standard
Orbital Gearwheel Set Type
Gerotor
Paint Information
Low Gloss Black Primer
Painted
With Painted
Port Location
Side, Aligned
Port Type
UNF-2B, SAE O-ring
Seal Material
HNBR
Series
H Series
Shaft Size
1 in Dia
Shaft Type
Straight Woodruff Keyed
Valve Type
Spool

Product Questions & Answers (2)

Question by: Janet M on Jan 10, 2026, 12:57 PM
Got a Char-Lynn H series motor that's been weeping fluid right at the output shaft for a while now. This the right seal to fix that?
Answer by: Customer Support on Jan 12, 2026, 12:04 PM
That's what this seal is built for. The 14778-1 is a direct-fit replacement for the shaft seal on Char-Lynn H series motors, so if you're seeing seepage at the output shaft interface, swapping this in should take care of it. It's sourced from Char-Lynn, meaning the dimensions and materials match up with the original assembly rather than being an aftermarket approximation.
Question by: Dwayne A on Dec 30, 2025, 8:26 PM
Will this seal work with any Char-Lynn H series motor, or do I need to check something specific?
Answer by: Customer Support on Jan 1, 2026, 6:34 AM
This high-pressure shaft seal is designed as a direct-fit replacement for Char-Lynn H series hydraulic motors. It ensures dimensional and material compatibility with the original motor assembly.

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