A type of hydraulic wrench is often designed to handle only a limited set of similar bolts, typically supplied with 1–10 exchangeable sleeves.
SAIVS engineers these sleeve ranges to guarantee precise socket-to-bolt fits and consistent torque transfer.
When a sleeve fits tightly it reduces play, concentrates torque on the fastener, and prevents rounding or slippage.
For procurement managers, that means fewer reworks, less downtime, and higher first-pass assembly yield when ordering SAIVS hydraulic wrench kits.
Select the sleeve set that covers the bolt diameters and thread types used in your die casting cells.
A properly matched sleeve range reduces the number of tool changes and simplifies inventory management on the shop floor.
SAIVS offers modular sleeve packs so you can stock the minimal assortment required for multiple machine models while keeping per-bolt accuracy high.
Many foundries and die casting shops prefer an electric pump paired with two hydraulic wrench heads to speed up bolt patterns and improve torque balance.
Connecting two heads to a single electric pump and arranging them diagonally on a flange ensures the applied torque is more uniform across the pattern.
This diagonal dual-head approach minimizes the risk of uneven clamping force, reduces distortion on sensitive castings, and helps you maintain consistent cycle times.
Using two SAIVS wrench heads driven by an electric pump reduces operator movement and overall tightening time.
It also distributes hydraulic fluid flow evenly so both heads receive equal pressure and deliver closely matched torque values.
For production engineers, that translates into measurable throughput gains without sacrificing assembly quality.
Although many operations are mechanized, Hydraulic Wrenches still require skilled manual operation for best results.
Operators must control alignment, feel for the wrench reaction, and sequence Bolt Tightening correctly to avoid cross-loading.
Hand custody—that is, attentive human control—ensures the wrench remains properly seated and that the applied torque is not influenced by a misaligned head.
Maintain SAIVS pumps and wrenches with regular oil checks, cleaning, and inspection for wear.
Replace sleeves that show deformation or excessive wear to preserve torque accuracy.
A preventive maintenance schedule reduces unexpected failures and keeps your tool calibration within tolerance.
Bolt torque measurement must follow recognized national standards such as the GB series to satisfy safety and regulatory requirements in China.
Using standardized torque tables and calibrated measurement equipment ensures that clamping forces meet design intent and statutory guidance.
SAIVS provides documentation and recommended torque charts aligned with GB norms so procurement and quality teams can demonstrate compliance.
When you specify SAIVS Hydraulic Torque Wrenches and dual-head electric pump systems, you get purpose-built sleeves, proven torque sequencing, and maintenance guidance that aligns with GB standards.
This combination reduces assembly risk, shortens installation time, and protects expensive tooling and cast parts from damage.
If your team aims to improve die casting consistency and lower rework rates, choosing SAIVS tools is a practical step toward measurable process control improvements.
Why Choose SAIVS™ as Your Supplier？
With 20 years of industry experience, SAIVS is a leading Chinese manufacturer of high-quality tools, offering competitive pricing and excellent customer service.We pride ourselves on exceptional quality control, extensive experience, and comprehensive after-sales service.