AHP MERKLE RZ 03 Dome‑Top Round Block Cylinder Piston Diameter 16/20/ 25/ 32/ 40/50/ 63/ 80/ 100 mm
Part Models:
- RZ320.25/16.03.201.025
- RZ320.32/20.03.201.032
- RZ320.40/25.03.201.040
- RZ320.50/32.03.201.050
- RZ320.63/40.03.201.063
- RZ250.32/16.03.201.032
- RZ250.40/20.03.201.040
- RZ250.50/25.03.201.050
MERKLE RZ AHP 03 Dome‑Top Round Block Cylinder Introduction
The RZ 03 is a high‑pressure, compact round block cylinder with a dome‑top (arched) front flange, engineered by AHP Merkle GmbH (Germany) for space‑restricted molds, stamping, and high‑force tooling. The 03 denotes dome‑top front flange mounting, optimized for tight installation envelopes and heavy impact loads.
Brand & Overview
- Brand: AHP Merkle GmbH (Germany, founded 1973)
- Model: RZ series (Round Block) + Mounting 03 (Dome‑Top Front Flange)
- Type: Double‑acting, compact, high‑pressure hydraulic cylinder
- Core Use: Mold inserts, die‑casting core pulls, stamping slides, and clamping in confined spaces (automotive, plastics, heavy tooling).
A: Depends on the style of tie-rod. We would like to cast and forge once the quantity above 100 pcs.
A: Well, it depends on the quantity and style of hydrualic cylinders, at least 60 days if we make casting and forging, at least 35 days by maching.
A: Sure, we are the manufacutuer and trading of hydraulic cylinder.
A: Double-Acting-have a port at each end, supplied with hydraulic fluid for both the retraction and extension. Single-Acting-hydraulic fluid enters through
a port at one end of the cylinder, which extends the rod by means of area difference. An external force or gravity returns the piston rod.
A: Sure. Show us the drawing, we will quote for you soonest.
A: Yes, we make and supply a wide rang of hydrualic cylinders as a proffetional manufacture, there are only some kinds of them show on the website. Freely contact us to get more information.
Pressure Ratings
- RZ500: Max 500 bar (7,250 psi) – heavy‑duty stamping/molds
- RZ320: Max 320 bar (4,640 psi) – medium‑heavy duty
- RZ250: Max 250 bar (3,625 psi) – light‑duty (rare for RZ).
Dimensions (mm)
- Piston diameter (bore): Ø16, 20, 25, 32, 40, 50, 63, 80, 100 (RZ500 up to Ø100; RZ320 up to Ø63).
- Rod diameter: 12, 16, 20, 25, 32, 40, 50 (matched to bore)
- Standard strokes: 5, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100 (max custom stroke: 200 mm).
Materials & Construction
- Cylinder body: High‑strength alloy steel, monolithic round block – more compact than BZ square block, ideal for tight spaces.
- Piston rod: Hardened → precision ground → hard chrome‑plated → mirror polished – high wear/impact resistance, low friction.
Seals
- tandard: NBR (‑20 °C to +80 °C)
- High‑temp: Viton (‑20 °C to +180 °C) – anti‑impact, anti‑extrusion.
- 03 = Dome‑top (arched) front flange – thickened, curved flange for higher bending moment capacity than standard flat flanges.
- Ports: Radial (side) or rear‑mounted (metric threads: M14×1.5, M18×1.5).
- Advantages:
- Space‑saving round body – fits tighter envelopes than BZ square cylinders.
- Reinforced dome design – distributes impact stress evenly.
- High vibration resistance – resists loosening in heavy stamping/die‑casting.
