Roper® 70428 Pump Parts
SWG10H crowned gear-joint replacement parts
ACCA Pumps supplies independently manufactured aftermarket replacement parts for supported Roper® 70428 gear-joint progressive cavity pump configurations. Use the complete pump figure, serial number and construction when identifying service components.
Roper® 70428 Engineering Overview
Roper® documents the 7X428 configuration in the SWG10 drive-end group and cross-references it with the SWG10H family. Unlike Roper® 70200 and 70300 pin-joint pumps, this configuration uses a sealed crowned gear-joint drive train.
Crowned Gear Joint
Hub and ring gears transmit torque through the sealed gear-joint assembly.
SWG10H Cross-Reference
The current Roper® parts documentation places this model in the SWG10 drive-end group.
Complete Identification
Confirm complete figure, serial number, construction and existing component number before ordering.
Roper® 70428 Engineering Data
| Roper® Family | 70400 Series |
| Roper® Model | 70428 |
| Documented Cross-Reference | SWG10H |
| Joint Design | Crowned gear joint |
| Drive-End Group | SWG10 drive-end group |
Roper® 70428 Gear-Joint Service Part Numbers
The following references are published in Roper®’s 2026 SWG10 drive-end block. Roper®’s SWG10 block is headed by the SWG8 / 7X412, SWG10 / 7X416 and SWG10H / 7X428 cross-references, while several individual component descriptions use the 412/19/28 size notation. Use the complete pump figure and serial number for final identification.
| Component | Roper® Part Number |
|---|---|
| Connecting rod assembly | N93-1 |
| Drive shaft, steel plated | D98-38 |
| Bearing coverplate | P92-13 |
| Connecting rod washer, 419/28 | D8-409 |
| Adapter-flange gasket | D11-482 |
| Connecting rod seal, 419 Buna | G90-14 |
| Retaining plate | D108-1 |
| Coupling housing | D107-1 |
| Connecting rod ring | D104-9 |
| Hub gear | D109-1 |
| Ring gear | D110-1 |
| Stub shaft | N90-13 |
| Front thrust plate | D111-1 |
| Rear thrust plate | D111-2 |
Important identification note
The Roper® book groups replacement configurations and legacy SWG references together. Treat this table as a technical identification aid, not as permission to interchange parts solely by model nickname or displacement.
Replacement Components Available
Hub & Ring Gears
Gear-joint torque-transmission components for the documented drive-end group.
Connecting Rod Components
Connecting rods, rings, seals and associated gear-joint hardware where documented.
Stub & Drive Shafts
Shaft components associated with the applicable crowned gear-joint assembly.
Thrust Components
Front and rear thrust plates and related hardware.
Rotors & Stators
Stage- and construction-specific pumping elements identified from the complete pump figure.
Bearings & Seals
Bearings, seals, packing and related overhaul components for supported configurations.
Before You Order Roper® 70428 Parts
Use the complete Roper® identification
Provide the full figure number, serial number, stage count, construction, stator elastomer and existing part number. Do not select a gear-joint component using the displacement digits alone.
Progressive Cavity Engineering Note — Joint & Drive Reliability
The drive train must transmit torque while accommodating the eccentric motion of the rotor. Joint condition, lubrication, alignment and bearing support are therefore important to reliable PCP operation, especially as torque and differential pressure increase.
Frequently Asked Questions
What type of joint does the Roper® 70428 use?
The 70400 family uses Roper®’s crowned gear-joint configuration rather than the pin-joint design used by the 70200 and 70300 families.
What SWG model is associated with Roper® 70428?
Roper®’s current parts documentation cross-references 7X428 with SWG10H in the SWG10 drive-end group.
Can I identify a gear-joint part by appearance?
No. Use the complete pump figure, serial number and existing component number because drive-end and material differences can change the applicable part.
Does ACCA supply individual gear-joint components?
Yes. ACCA can support individual aftermarket replacement components for applicable configurations after the installed pump is identified.
Related Roper® Parts Resources
Roper® 70400 Parts
Return to the 70400 gear-joint model selector.
Roper® Pump Parts
Browse the complete Roper® parts hub.
SWG10H Reference
Use the documented SWG cross-reference as an identification aid when reviewing existing equipment.
Need Help Identifying Roper® 70428 Parts?
Send the complete Roper® figure, serial number and existing component number when available.