Product Description
JT SB-19 is a 19 mm diameter case-hardened steel ball manufactured by Jet, used as an internal check/valve component in Jet PTX and JTX manual pallet jack hydraulic units. Material is high carbon, precision ground steel with nominal HRC 60 surface hardness. No cross-reference part numbers are published for this item.
Compatibility: Fits pallet jacks made by Jet, model PTX & JTX. SKU: JT SB-19
Specifications
Material
| Ball Material | Case-hardened steel |
| Surface Hardness | Nominal HRC 60 |
| Surface Finish | Precision ground |
| Material Specification | High carbon steel (reference Jet OEM technical spec) |
Part Numbers
| OEM Part Number | JT SB-19 |
| Manufacturer Part Number | JT9-SB-19 |
Frequently Asked Questions
Q: What are the specifications of the JT SB-19 steel ball?
A: The JT SB-19 is a 19 mm diameter case-hardened steel ball manufactured by Jet. Material is high carbon steel with precision ground finish and nominal Rockwell HRC 60 surface hardness. It functions as a check valve component in Jet hydraulic pump and valve blocks.
Q: Which Jet pallet jack models use the JT SB-19 ball?
A: The JT SB-19 is compatible with Jet PTX and JTX manual pallet jacks. It is used in the internal hydraulic check valve assembly of these models.
Q: What is the material and hardness of the JT SB-19?
A: The JT SB-19 is made from high carbon steel that is case-hardened to achieve a nominal Rockwell HRC 60 surface hardness. The ball is precision ground to ensure accurate diameter and smooth operation in the check valve application.
Q: What is the cross-reference or alternate part number for JT SB-19?
A: The manufacturer part number is JT9-SB-19. No published cross-reference equivalents exist from other suppliers. Order using the exact OEM SKU JT SB-19.
Q: Is the JT SB-19 suitable for other pallet jack brands?
A: The JT SB-19 is a Jet-specific component designed for Jet PTX and JTX models. Check valve balls are precision-matched to hydraulic pump specifications. Do not substitute for other brands without verifying diameter, hardness, and hydraulic compatibility.