What is the gear ratio for etrailer Square Jack with Handle 12k
Updated 05/28/2026 | Published 05/25/2026
Products Featured in This Question
Question:
What is the gear ratio for this jack?
asked by: Kristen D
Expert Reply:
Great question Kristen, appreciate you reaching out!
The Square 2 Speed Jack with Crank # TJD2SP-12000SP-F in high gear setting requires 6.43 handle turns per inch of jack travel, while the low gear setting requires 22.86 handle turns per inch of travel.
In high gear, the jack operates approximately 3.5 times faster than a comparable single-speed jack with the same 10,000 lb lift capacity and 12,000 lb support capacity.
What do you usually haul with this trailer; horses, equipment, or camping gear?
Product Page this Question was Asked From
Square 2-Speed Trailer Jack w/ Handle - Drop Leg - Sidewind - 12-3/8" Lift - 10,000 lbs - Weld
- Trailer Jack
- Car Hauler
- Enclosed Trailer
- 5th Wheel Trailer
- Gooseneck Trailer
- Side-Mount Jacks
- Sidewind Jack
- 9001 - 10000 lbs
- Manual Jack
- 26 Inch Lift
- Weld-On
- With Rectangle Foot
- etrailer
more information >
Continue Researching
- Shop: etrailer Square Sidewind Trailer Jack - Foot Release Drop Leg - 13-1/2" Lift - 12,000 lbs
- Q&A: Difference Between the RAM Square 2-Speed Trailer Jack TJD2SP-12000SP-F and e26FV
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Q&A: Is There A Goosebox That Can Replace The Reese Revolution 16K Pin Box?
- Q&A: Optronics Mini Red LED Clearance or Side Marker Light MCL131CR3B
- Q&A: Does Gen-Y Fifth Wheel to Gooseneck Fit 2020 Forest River Cherokee Arctic Wolf 287BH 1621 Pin Box
- Q&A: Is There a Gooseneck Replacement for Reese Revolution 21K
- Q&A: Heavy-Duty 12000 lb Bulldog Jack Replacement Cross Shaft and Bushings Recommendation
- Article: Trailer Wiring Diagrams
- Article: How to Choose the Best Tonneau Cover
- Article: What Do I Need To Tow A Trailer?
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Jacks
- Article: Trailer Lighting Requirements
- Article: RV-Mounted vs Vehicle-Mounted Tow Bars