Basic prebonder

Fine sandblasting unit for the dental office

The first scientifically validated fine sandblasting unit for clinical surface conditioning of restorations prior to final cementation. The Basic prebonder standardizes the pretreatment of zirconia, metal alloys, hybrid materials, and modern polymers, reliably preventing errors caused by insufficient sandblasting, excessive energy input, and resulting bonding failures. Based on Renfert’s proven Basic quattro IS technology, the Basic prebonder offers a practical, modular system. Flexible tank options and an ergonomic handpiece make clinical surface conditioning simple and efficient.

Advantages

Reliable bonding through standardized surface conditioning.
Reproducible results thanks to validated pressure range and controlled sandblasting parameters.
Gentle on materials due to precise energy dosing.

Product variants Product variants
Technical data Technical data
Accessories Accessories
Spare parts Spare parts
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Details

Consistent energy input via the Prebonder control tip for a defined working distance.
Uniform surface roughness through the Prebonder jet nozzle with a homogeneous spray cone.
Scientifically validated pressure range for optimal bonding.
Clear process control with precision manometer and marked working range.
Even abrasive flow provided by the Renfert Venturi mixing chamber.
Precise blasting pulses thanks to IS (Immediate Stop) system without bleed-off.
Flexible use with a modular tank concept for different sandblasting operations in the dental office.

Basic prebonder, 25-70 µm, 220-240 V

Item number 29691050

Description:

Fine sandblasting unit for surface conditioning of restorations prior to adhesive cementation.

Scope of delivery:
1 x Prebonder tank: Only for 50 µm Prebonder surface pro abrasive incl. special nozzle (jet nozzle), spacer pin / focusing aid (control tip), additional 2 bar linear pressure reducer, 4 replacement spacer pins / focusing aids (control tip), 1 test surface for monitoring the sandblasting parameters (control pad), 1 x classic fine sandblasting tank 25-70 µm incl. jet nozzle 0.8 mm

Basic prebonder, 70-250 µm, 220-240 V

Item number 29691250

Description:

Fine sandblasting unit for surface conditioning of restorations prior to adhesive cementation.

Basic prebonder, 70-250 µm, 100-120 V

Item number 29694250

Description:

Fine sandblasting unit for surface conditioning of restorations prior to adhesive cementation.

Basic prebonder, 25-70 µm, 100-120 V

Item number 29694050

Description:

Fine sandblasting unit for surface conditioning of restorations prior to adhesive cementation.

	Basic prebonder, 25-70 µm, 220-240 V	Basic prebonder, 70-250 µm, 220-240 V	Basic prebonder, 70-250 µm, 100-120 V	Basic prebonder, 25-70 µm, 100-120 V
Item number	29691050	29691250	29694250	29694050
Dimensions (W x H x D) (3-4 tanks)	395 x 320 x 610 mm	395 x 320 x 610 mm	395 x 320 x 610 mm	395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding	0.6 - 1 bar 8.7 - 14.5 psi	0.6 - 1 bar 8.7 - 14.5 psi	0.6 - 1 bar 8.7 - 14.5 psi	0.6 - 1 bar 8.7 - 14.5 psi
Working pressure - Recommended setting	0.8 bar 11.6 psi	0.8 bar 11.6 psi	0.8 bar 11.6 psi	0.8 bar 11.6 psi
Working pressure - Conventional fine sandblasting	1 - 6 bar 14.5 - 87 psi	1 - 6 bar 14.5 - 87 psi	1 - 6 bar 14.5 - 87 psi	1 - 6 bar 14.5 - 87 psi
Use	Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm	Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm	Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm	Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm
Permissible mains voltage	220 - 240 V	220 - 240 V	100 - 120 V	100 - 120 V
Permissible mains frequency	50 - 60 Hz	50 - 60 Hz	50 - 60 Hz	50 - 60 Hz
Weight (empty, 2-tanks)	11.5 kg	11.5 kg	11.5 kg	11.5 kg
Dimensions (W x H x D) (1-2 tank version)	395 x 320 x 510 mm	395 x 320 x 510 mm	395 x 320 x 510 mm	395 x 320 x 510 mm
Connection pressure	6 - 7 bar 87 - 116 psi	6 - 8 bar 87 - 116 psi	6 - 8 bar 87 - 116 psi	6 - 8 bar 87 - 116 psi
Air consumption (max.)	98 l/min 3.46 cfm	98 l/min 3.46 cfm	98 l/min 3.46 cfm	98 l/min 3.46 cfm
Lamp power	16 W	16 W	16 W	16 W
Intensity of lighting (max., at 410 mm distance)	4.8 lx	4.8 lx	4.8 lx	4.8 lx
Tank capacity	1,000 ml	1,000 ml	1,000 ml	1,000 ml
Number of tanks	2 - 4	2 - 4	2 - 4	2 - 4
Blasting chamber volume	20 l 5.3 gal	20 l 5.3 gal	20 l 5.3 gal	20 l 5.3 gal
Immediate stop function	1	1	1	1
Silicone-coated panel	yes	yes	yes	yes

Item number: 29691050
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm
Permissible mains voltage: 220 - 240 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 7 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Item number: 29691250
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm
Permissible mains voltage: 220 - 240 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 8 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Item number: 29694250
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm
Permissible mains voltage: 100 - 120 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 8 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Item number: 29694050
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm
Permissible mains voltage: 100 - 120 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 8 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Technical data

	Basic prebonder, 25-70 µm, 220-240 V	Basic prebonder, 70-250 µm, 220-240 V	Basic prebonder, 70-250 µm, 100-120 V	Basic prebonder, 25-70 µm, 100-120 V
Item number	29691050	29691250	29694250	29694050
Dimensions (W x H x D) (3-4 tanks)	395 x 320 x 610 mm	395 x 320 x 610 mm	395 x 320 x 610 mm	395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding	0.6 - 1 bar 8.7 - 14.5 psi	0.6 - 1 bar 8.7 - 14.5 psi	0.6 - 1 bar 8.7 - 14.5 psi	0.6 - 1 bar 8.7 - 14.5 psi
Working pressure - Recommended setting	0.8 bar 11.6 psi	0.8 bar 11.6 psi	0.8 bar 11.6 psi	0.8 bar 11.6 psi
Working pressure - Conventional fine sandblasting	1 - 6 bar 14.5 - 87 psi	1 - 6 bar 14.5 - 87 psi	1 - 6 bar 14.5 - 87 psi	1 - 6 bar 14.5 - 87 psi
Use	Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm	Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm	Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm	Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm
Permissible mains voltage	220 - 240 V	220 - 240 V	100 - 120 V	100 - 120 V
Permissible mains frequency	50 - 60 Hz	50 - 60 Hz	50 - 60 Hz	50 - 60 Hz
Weight (empty, 2-tanks)	11.5 kg	11.5 kg	11.5 kg	11.5 kg
Dimensions (W x H x D) (1-2 tank version)	395 x 320 x 510 mm	395 x 320 x 510 mm	395 x 320 x 510 mm	395 x 320 x 510 mm
Connection pressure	6 - 7 bar 87 - 116 psi	6 - 8 bar 87 - 116 psi	6 - 8 bar 87 - 116 psi	6 - 8 bar 87 - 116 psi
Air consumption (max.)	98 l/min 3.46 cfm	98 l/min 3.46 cfm	98 l/min 3.46 cfm	98 l/min 3.46 cfm
Lamp power	16 W	16 W	16 W	16 W
Intensity of lighting (max., at 410 mm distance)	4.8 lx	4.8 lx	4.8 lx	4.8 lx
Tank capacity	1,000 ml	1,000 ml	1,000 ml	1,000 ml
Number of tanks	2 - 4	2 - 4	2 - 4	2 - 4
Blasting chamber volume	20 l 5.3 gal	20 l 5.3 gal	20 l 5.3 gal	20 l 5.3 gal
Immediate stop function	1	1	1	1
Silicone-coated panel	yes	yes	yes	yes

Item number: 29691050
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm
Permissible mains voltage: 220 - 240 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 7 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Item number: 29691250
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm
Permissible mains voltage: 220 - 240 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 8 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Item number: 29694250
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 70-250µm
Permissible mains voltage: 100 - 120 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 8 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Item number: 29694050
Dimensions (W x H x D) (3-4 tanks): 395 x 320 x 610 mm
Working pressure - Fine sandblasting for bonding: 0.6 - 1 bar
8.7 - 14.5 psi
Working pressure - Recommended setting: 0.8 bar
11.6 psi
Working pressure - Conventional fine sandblasting: 1 - 6 bar
14.5 - 87 psi
Use: Fine sandblasting for bonding 50µm and conventional fine sandblasting 25-70µm
Permissible mains voltage: 100 - 120 V
Permissible mains frequency: 50 - 60 Hz
Weight (empty, 2-tanks): 11.5 kg
Dimensions (W x H x D) (1-2 tank version): 395 x 320 x 510 mm
Connection pressure: 6 - 8 bar
87 - 116 psi
Air consumption (max.): 98 l/min
3.46 cfm
Lamp power: 16 W
Intensity of lighting (max., at 410 mm distance): 4.8 lx
Tank capacity: 1,000 ml
Number of tanks: 2 - 4
Blasting chamber volume: 20 l
5.3 gal
Immediate stop function: 1
Silicone-coated panel: yes

Prebonder surface pro

Item number 15970050

Description:

50 µm

Scope of delivery:
4 x 500 g (1.10 lbs.)

Additional tank, 25–70 μm

Item number 29590050

Description:

Tank assembly in only a few steps. Tool-free tank extension via quick-release coupling and color-coded system. Individual design of the tank for 25–70 µm or 70–250 µm abrasives. Transparent tank for checking the filling Level.

Scope of delivery:
1 x 25–70 µm, incl. nozzle 0.8 mm

Additional tank, 70–250 µm

Item number 29590250

Description:

Scope of delivery:
1 x 70–250 μm, incl. nozzle 1.2 mm

Blow-out nozzle

Item number 13710000

Scope of delivery:
1 piece

Rolloblast, 50 µm

Item number 15941305

Description:

50 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

Rolloblast, 100µm

Item number 15891005

Description:

100 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

Cobra, 110 µm

Item number 15831005

Description:

90–125 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

Cobra, 110 µm

Item number 15831012

Description:

110 µm

Scope of delivery:
12.5 kg bucket (27.6 lbs.)

Cobra, 90 µm

Item number 15841005

Description:

90 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

Cobra, 250 µm

Item number 15851012

Description:

250 µm

Scope of delivery:
12.5 kg bucket (27.6 lbs.)

Cobra, 250 µm

Item number 15851005

Description:

250 µm (60 mesh)

Scope of delivery:
5 kg canister (11.04 lbs.)

Cobra, 125 µm

Item number 15871012

Description:

125 µm

Scope of delivery:
12.5 kg bucket (27.6 lbs.)

Cobra, 125 µm

Item number 15871005

Description:

125 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

Cobra, 25 µm

Item number 15941105

Description:

25 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

Cobra, 50 µm

Item number 15941112

Description:

50 µm

Scope of delivery:
12.5 kg bucket (27.6 lbs.)

Cobra, 50 µm

Item number 15941205

Description:

50 µm

Scope of delivery:
5 kg canister (11.04 lbs.)

IT sandblasting nozzle Ø 0.40 mm

Item number 900021203

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 25 (μm)

Scope of delivery:
1 piece

IT sandblasting nozzle Ø 0.80 mm

Item number 900021204

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 90 (μm)
▪️ recommended for Cobra 50, 110, Rolloblast 50,100, 3M EspeSoft (μm)

Scope of delivery:
1 piece

IT sandblasting nozzle Ø 1.40 mm

Item number 900021205

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 125 (μm)
▪️ recommended for Cobra 110, 250, Rocatec Pre&Plus (μm)

Scope of delivery:
1 piece

IT sandblasting nozzle Ø 2.00 mm

Item number 900021206

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 250 (μm)

Scope of delivery:
1 piece

IT Slotted nozzle Ø 1.5x 3.5 mm

Item number 900031739

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 110, 125, 250, Rolloblast 100 (μm)

Scope of delivery:
1 piece

IT sandblasting nozzle Ø 1.00 mm

Item number 900033211

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 110, Rolloblast 100 (μm)
▪️ recommended for Cobra 90, 125, Rocatec Pre&Plus (μm)

Scope of delivery:
1 piece

IT sandblasting nozzle Ø 0.60 mm

Item number 900033213

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 50, Rolloblast 50, 3M EspeSoft (μm)

Scope of delivery:
1 piece

IT sandblasting nozzle Ø 1.20 mm

Item number 900033214

Description:

Blasting nozzles for the Basic units
▪️ highly recommended for Cobra 125, Rocatec Pre&Plus (μm)
▪️ recommended for Cobra 50, 90, 110, 250, Rolloblast 100 (μm)

Scope of delivery:
1 piece

Basic prebonder, 25-70 µm, 220-240 V Item number 29691050	View spare parts list
Basic prebonder, 70-250 µm, 220-240 V Item number 29691250	View spare parts list
Basic prebonder, 70-250 µm, 100-120 V Item number 29694250	View spare parts list
Basic prebonder, 25-70 µm, 100-120 V Item number 29694050	View spare parts list

Catalogue

RENFERT_CATALOG_EN.PDF

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Declaration of conformity

Dentale Strahlgeräte

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Quick Start Guide

BASIC prebonder

PDF (3.52MB)

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Instruction manual

BASIC prebonder

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Quick Start Guide

Basic Prebonder Visual Guide

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Basic prebonder

Fine sandblasting unit for the dental office

Advantages

Details

Basic prebonder, 25-70 µm, 220-240 V

Basic prebonder, 70-250 µm, 220-240 V

Basic prebonder, 70-250 µm, 100-120 V

Basic prebonder, 25-70 µm, 100-120 V

Technical data

Prebonder surface pro

Additional tank, 25–70 μm

Additional tank, 70–250 µm

Blow-out nozzle

Rolloblast, 50 µm

Rolloblast, 100µm

Cobra, 110 µm

Cobra, 110 µm

Cobra, 90 µm

Cobra, 250 µm

Cobra, 250 µm

Cobra, 125 µm

Cobra, 125 µm

Cobra, 25 µm

Cobra, 50 µm

Cobra, 50 µm

IT sandblasting nozzle Ø 0.40 mm

IT sandblasting nozzle Ø 0.80 mm

IT sandblasting nozzle Ø 1.40 mm

IT sandblasting nozzle Ø 2.00 mm

IT Slotted nozzle Ø 1.5x 3.5 mm

IT sandblasting nozzle Ø 1.00 mm

IT sandblasting nozzle Ø 0.60 mm

IT sandblasting nozzle Ø 1.20 mm

Basic prebonder, 25-70 µm, 220-240 V

Basic prebonder, 70-250 µm, 220-240 V

Basic prebonder, 70-250 µm, 100-120 V

Basic prebonder, 25-70 µm, 100-120 V

Catalogue

Brochures

Brochures

Brochures

Brochures

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Brochures

Declaration of conformity

Quick Start Guide

Instruction manual

Quick Start Guide

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