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Request a QuoteCapacitor Discharge (CD) Stud Welder - CDi 1502 AT
The CDi 1502 AT is a high-performance inverter-capacitor Capacitor Discharge (CD) stud welder engineered for high-speed production and thin-gauge sheet metal applications. Supporting production rates of up to 40 studs per minute on 0.012” (M3) studs, it welds mild steel, stainless steel, aluminum, and brass studs from #4 to 5/16" (M3 to M8). The optional automation package allows the system to operate with a semi-automatic PAH-1 welding gun and a VBZ-3 automatic stud feeder, making it suitable for semi-automatic production workstations. Get the CDi 1502 from Sunbelt Stud Welding, Houston, TX, supplied throughout the United States.
Description
Unbeatable new power pack
- With efficient inverter-capacitor charging technology
- Enormous time and energy savings (30% less energy)
- Highest cycle sequence of its class (up to 40 studs/min.)
- 20% energy reserve due to 220 V charging voltage
- Simple operation & minimal weight (20% lighter than previous model)
- Extreme long life due to robust and functional industrial design
Highest level of quality and safety
- Capacitor formation recorded - Quality control for consistent capacitor quality through automated formation
- Shock-proof capacitor battery - No contact of the capacitors to the device housing; sparkover (short circuit) is therefore not possible
- Cooling channel - Protects the electronic components from getting soiled. Ideal cooling of the inverter charging p.c. board for high sequence cycles.
Application
Especially suitable for high-cycle stud welding for thin gauge base material.
Performance Features
- Unbeatable new power pack
- With efficient inverter-capacitor charging technology
- Enormous time and energy savings (30% less energy)
- Highest cycle sequence of its class (up to 40 studs/min.)
- 20% energy reserve due to 220 V charging voltage
- Simple operation & minimal weight (20% lighter than previous model)
- Extremely long life due to robust and functional industrial design
- Automated capacitor formation monitoring
- Shock-proof capacitor battery
Mild steel
Stainless steel
Aluminium
Brass
M3 to M8 - #4 to 5/16"
| GENERAL INFORMATION |
|---|
Application
|
| TECHNICAL SPECIFICATIONS | |
|---|---|
| Welding Process | CD |
| Welding Material | Mild steel, Stainless steel, Aluminum, Brass |
| Technology | Inverter-Capacitor Charging Technology |
| Equipment | Automation |
| Display | Digital |
| Welding range |
M3 to M8, dia. 2 to 8 mm / #4 to 5/16" , dia. 14 ga to
5/16" Cupped head pins: dia. 2 and 2.7 mm / 14 ga and 12 ga Insulation pins: dia. 2 and 3 mm / 14 ga and #4 |
| Welding rate |
M3 / #4=40 studs/min. (voltage 60 V) M8 / 5/16"=14 studs/min. (voltage 200 V) M8 / 5/16“ = 12 studs/min (voltage 220 V) |
| Capacitance | 66,000 μF |
| Welding time | 1 to 3 ms |
| Energy | 1,600 Ws |
| Charging voltage | 50 to 220 V (stepless voltage regulation) |
| Primary power | 230 V/115 V*, 50/60 Hz, 10 AT (slow blow) *alternative primary power see Order Number |
| Connected load | 600 VA |
| Power source | Capacitor |
| Cooling type | F (temperature controlled cooling fan) |
| IP code | IP 21 |
| Dimension L x W x H (without handle) | 15.75" x 8.07" x 9.84" 400 x 205 x 250 mm |
| Weight | 30.87 lbs (14 kg) |
| Suitable guns | See below |
| Order number |
92-10-1504B (230 V) 92-12-1504B (115 V) 92-13-1504B (100 V) |
| WHERE THE CDi 1502 AT FITS | |
|---|---|
| USE CASE | WHY THE CDi 1502 AT |
| Thin sheet metal fabrication | CD process avoids blow-through on thin gauges that arc welding can't handle. |
| Aluminum or brass fastener welding | One of the few Sunbelt automation-ready models rated for both materials. |
| High-cycle production lines | Up to 40 studs per minute on M3 fasteners supports fast, repeat-pattern output. |
| Insulation pin and cupped-head pin attachment | Dedicated diameter ranges built into the welding range simplify production. |
| Portable or bench setups | Compact 14 kg unit weight and single-phase 230V/115V power suit smaller workshops and mobile stations. |
FAQs
The CDi 1502 AT uses inverter-capacitor charging technology to reduce energy consumption, shorten charging times, and achieve production rates of up to 40 studs per minute, making it suitable for high-volume manufacturing.
Mild steel, stainless steel, and aluminum, across a stud diameter range of M3 to M8 (#4 to 5/16"), plus cupped head pins and insulation pins in smaller diameters.
It uses inverter-capacitor charging instead of a standard transformer charge, cutting energy use by about 30% and giving a 20% energy reserve from its 220V charging voltage, while running about 20% lighter than the previous-generation model.
Yes. The capacitor battery is shock-proof, with no contact between the capacitors and the housing, and a dedicated cooling channel keeps the inverter charging board clean and cool during sustained high-speed cycles.
The PAH-1 tripod gun or PAH-1 centering-device gun, both run with the VBZ-3 fully automatic stud feeder for semi-automatic operation.
14 kg (30.87 lbs), about 20% lighter than the previous-generation CD welder in Sunbelt's line, which makes it easier to move between bench stations.
No. The CDi 1502 AT is a semi-automatic CD stud welder designed for manual gun operation. It supports automated stud loading via the VBZ-3 feeder, but it is not built for full production-line integration.
No. The CDi 1502 AT does not include built-in process monitoring or weld data logging. It offers a digital display and stepless voltage control, but no automated quality-tracking system.
The CDi 1502 AT is an entry-level CD stud welder for semi-automatic use. The gun is operated manually, though stud loading can be automated. The CDMi 2402 is built for higher-level automation and production integration.
Stud Welding Guns
PAH-1 (Tripod)
M3 to M8
- Studs length (from 0.31 to 1.18") - other lengths only by request
- Universal design for flat surfaces
- Hand gun for fully automatic stud feed (with VBZ-3) or hand feed
- Recommended for large-scale production
PAH-1 (centering device dia. 30 mm)
M3 to M8
- Studs length (from 0.31 to 1.18 inches) - other lengths only by request
- Used for welding with templates
- Hand gun for fully automatic stud feed (with VBZ-3) or hand feed
- Recommended for large-scale production