RH Series Double-Acting Rotary Hydraulic Cylinder

RH Series Double-Acting Rotary Hydraulic Cylinder

High-speed double-acting rotary hydraulic cylinder, matched with hollow hydraulic power chucks for CNC lathe, stable pulling force and long service life.
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Description

RH series double-acting rotary hydraulic cylinders are precision-manufactured with high-strength alloy steel, the standard matching hydraulic actuator for lathe hollow power chucks.
  1. Double-sided independent piston structure: Push-side & Pull-side separate oil chambers, realize outer clamping / inner clamping switching of hydraulic chuck.
  2. High dynamic balance design, maximum rotating speed up to 6000rpm, fit high-speed precision turning.
  3. Built-in leakage prevention & lubrication structure, effectively avoid oil leakage during long-term continuous operation.
  4. Standard thread connecting specification, directly compatible with mainstream 5/6/8/10/12 inch hollow hydraulic chuck on market.
  5. Compact overall outline, convenient lathe spindle rear installation and maintenance.

Complete Specification Table (Unit: mm / kg)

Performance Parameters

MODEL Piston area (cm²) Stroke (mm) Highest turnover(r.p.m) Max working pressure GD²(Kg·m²) Weight(kg)
Push side Pull side MPa kgf/cm²
RH-65 31.0 27.9 15 6000 3.5 35 0.01 2.9
RH-80 47.7 42.8 15 6000 3.5 35 0.01 3.4
RH-100 75.4 70.5 20 5500 3.5 35 0.04 4.9
RH-125 119.6 112.5 25 5500 3.5 35 0.08 6.8
RH-150 173.6 157.7 30 4000 4.0 40 0.18 11.5
RH-200 310.0 286.3 35 4000 4.0 40 0.38 20.4

Mounting & Outline Dimension

MODEL A B C D E(h7) F G(max) G(min) H J K L M(h8) N 2-P Price
RH-65 65 15 98 80 60 22 45 30 74 175 M12×1.75 6-M8×16 — - PT3/8
RH-80 80 15 112 90 65 25 45 30 74 175 M16×2 6-M8×16 - - PT3/8
RH-100 100 20 135 100 80 30 45 25 89 190 M20×2.5 6-M10×20 - - PT3/8
RH-125 125 25 160 130 110 36 50 25 96 197 M24×3 6-M12×20 - - PT3/8
RH-150 150 30 190 130 110 45 55 25 105 206 M30×3.5 12-M12×24 31 5 PT3/8
RH-200 200 35 245 145 120 55 70 35 130 231 M36×4 12-M12×24 37 5 PT3/8

Parameter Explanation

  • Piston area : Effective compression area of push & pull piston, decides output clamping force of matched chuck
  • Stroke : Maximum effective pull/push travel of piston
  • Highest turnover : Max allowable spindle rotating speed
  • Max working pressure : Rated maximum hydraulic input pressure
  • GD² : Inertia factor for spindle dynamic balance check
  • A/B/C/D/E/F/G/H/J/K/L/M/N : Overall and installation dimension (mm), consistent with engineering drawing marking
  • 2-P / PT3/8 : Oil port specification and mounting hole parameters

Applications

CNC Machining

Ideal for CNC lathe, milling and machining center operations, ensuring high-precision dimensional control and reliable tool holding for mass production.

Quality Control Labs

Suitable for quality inspection departments and calibration labs, providing accurate measurement data to verify product compliance with ISO and industry standards.

Mold & Die Making

Perfect for mold and die workshops, where micron-level precision tools and gauges are essential for complex cavity machining and final inspection.

OEM/ODM Projects

Customizable solutions for OEM and ODM manufacturing partners, offering tailored measuring tools and CNC accessories to meet unique production requirements.

Automotive Manufacturing

Designed for automotive component production lines, ensuring consistent precision and durability in engine parts, transmission components and assembly processes.

Aerospace & Precision Engineering

Ideal for aerospace and defense manufacturing, where ultra-high precision instruments and reliable tool holders meet strict quality and safety requirements.

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