Goulds Pumps 3620 - IOM - Manual (Page 16)

Product Description
Bearings
Bearing type Characteristics
Inboard (radial)
• Consists of a single-row deep-groove ball bearing (standard)
• Carries only radial load
• Optional sleeve bearings
Outboard (thrust)
• Consists of a pair of single-row angular contact ball bearings
mounted back-to-back (standard)
• Shouldered and locked to the shaft
• Retained in the bearing frame to enable the bearing to carry both
radial and thrust loads
• Optional hydrodynamic thrust bearing for use with sleeve type journal
bearings
Shaft
The heavy duty shaft has these characteristics:
• Designed for cartridge mechanical seals
• Minimal shaft deflection at the seal faces (0.002 in. [0.051 mm]) when run in the worst-
case condition (typically minimum flow)
• Critical speed at least 20% above design operating speed
Baseplate
The fabricated steel baseplate supports the pump, driver, and accessories in accordance with
API-610 latest Edition (ISO 13709) requirements.
Direction of rotation
The shaft rotates counterclockwise when viewed from the power end.
Nameplate information
Important information for ordering
Every pump has a nameplate that provides information about the pump. The nameplate is
located on the pump casing.
When you order spare parts, identify this pump information:
• Model
• Size
• Serial number
• Item numbers of the required parts
Refer to the nameplate on the pump casing for most of the information. See Parts List for item
numbers.
Nameplate types
Nameplate Description
Pump casing Provides information about the hydraulic characteristics of the pump.
The formula for the pump size is: Discharge x Suction - Nominal Maximum Impeller
Diameter in inches.
(Example: 2x3-8)
ATEX If applicable, your pump unit might have an ATEX nameplate affixed to the pump, the
baseplate, or the discharge head. The nameplate provides information about the
ATEX specifications of this pump.
14 Model 3620, API Type BB2 Single Stage / ISO 13709 1st/2nd Ed. / API 610 8th-11th Ed. Installation, Operation, and
Maintenance Manual