Household Glassware Machinery

Linear Type Glass Socket and Cone Joint Machine

SM-J19 linear type glass socket and cone joint forming machine. Multi-station PLC-controlled production of standard and custom ground glass joint connections for laboratory glassware assembly.

Tube: Φ16–25mmOutput: 600–1,200 pcs/hLinear Multi-StationPLC ControlBorosilicate

Product Overview

The SM-J19 Linear Type Socket and Cone Machine is a specialised glass forming machine for the production of standard ground glass joint connections — the interchangeable socket (female) and cone (male) joints used to connect laboratory glassware components. These precision ground joints are a fundamental component of modular laboratory glassware assemblies worldwide.

The machine uses a linear multi-station configuration to form the tapered socket and cone profiles on glass tube ends. Each station applies controlled flame-heating and forming pressure to create the accurate taper angle and surface finish required for an airtight glass-to-glass seal — critical in laboratory distillation, synthesis, and gas handling applications.

Sea Melody has supplied laboratory glassware joint forming machines to manufacturers in Europe, Asia, and the Middle East, and the SM-J19 is designed to meet the precise dimensional requirements of international laboratory glassware standards.

Key Features

  • Linear multi-station forming for continuous production
  • Forms both socket (female) and cone (male) glass joint profiles
  • Precise taper angle control for airtight joint performance
  • Suitable for standard ground joint sizes (14/23 through 29/32 and custom)
  • Compatible with borosilicate glass tubes
  • PLC control for repeatable joint dimensions
  • Interchangeable forming tooling for different joint sizes
  • Full technical documentation and training included

Technical Specifications

Parameter Value
Model SM-J19
Product Type Glass Socket and Cone Joints
Machine Type Linear multi-station
Glass Type Borosilicate
Tube Diameter Φ16–25mm
Output 600–1,200 pcs/h
Consumption 1.5 kWh; gas 1.9 kg/h; oxygen 0.8 bottles/h
Machine Dimensions 4.2 × 0.9 × 1.2 m
Weight 460 kg
Joint Sizes 14/23, 19/26, 24/29, 29/32 (standard + custom)
Control System PLC + Touchscreen
Power Supply 380V / 50Hz
Fuel LPG or Natural Gas + Oxygen

Applications

The SM-J19 produces glass ground joint components for:

  • Laboratory glassware assembly connections (flasks, condensers, funnels)
  • Distillation and reflux apparatus ground glass joints
  • Analytical chemistry and synthesis glassware connections
  • Pharmaceutical manufacturing glass equipment joints
  • Export laboratory glassware production for international markets

Product Demo

Video coming soon. Contact us to request a product demonstration.

Frequently Asked Questions

What glass tube sizes does the SM-J19 machine handle?

The SM-J19 Linear Type Socket/Cone Machine processes borosilicate glass tubes to form socket and cone joint connections in standard laboratory ground joint sizes (e.g. 14/23, 19/26, 24/29, 29/32). Contact us with your specific joint size requirements.

What is the production output?

The SM-J19 features a linear multi-station design for continuous production of glass socket and cone joints. Contact us for specific output rates based on your joint size and glass tube diameter.

Can this machine be customised for different joint sizes?

Yes. Forming tooling can be produced for any standard or custom ground joint size. Visit our Custom Orders page to discuss your specific joint manufacturing requirements.

What are the lead time and shipping terms?

Standard lead time is 40 working days from order confirmation, as each machine is manufactured to order. For custom or modified machines, allow approximately 60 working days. Contact us for a specific timeline based on your requirements.

What warranty and after-sales support do you offer?

All machines carry a 12-month warranty with 7×24 remote support. See our After-Sales Support page for full details.

Is technical training provided?

Yes. Free online training, manuals, and installation videos are included. On-site training can be arranged on request.

Who manufactures this machine?

This machine is designed and manufactured by Nantong Sea Melody Industrial Co., Ltd, a specialist glass machinery manufacturer based in Nantong, China, with over 24 years of experience. Sea Melody machines are currently operating in 35+ countries across pharmaceuticals, laboratory, and household glassware industries. All Sea Melody machines are produced under an ISO 9001:2015-certified quality management system. Learn more about Sea Melody →

Interested in This Machine?

Our team can provide full specs, custom configurations, and fast quotes. We ship to 35+ countries.