OTEC DF 3/4 vs DF 7/8 drag finishing catalog comparison

Compare DF 3/4 and DF 7/8 using the official OTEC DF brochure, printed page10. Review all eleven source rows or filter geometry, capacity, electrical supply and holder fields. Record the actual part, fixture, site and acceptance questions, then download the current review. The five grouped catalog columns and configuration alternatives remain intact. This versioned reference has 2019 PDF metadata; current offers and workpiece suitability require a separate supplier review.

Compare the catalog pair and record review questions

Field groupYour part drawing and protected-feature referenceYour holder, clamping and spacing questionsYour site access and electrical-review referenceYour trial and inspection acceptance owner

Choose a field group and compare the versioned source; optionally record your own part and fixture review requirements.

Read this pair's eleven source rows

Machine dimensions (w x d x h mm): DF 3/4 1415 x 1050 x 2500; DF 7/8 1740 x 1360 x 2680. Working capacity of drum (liters): DF 3/4 80; DF 7/8 200. Weight (kg): DF 3/4 ~ 900; DF 7/8 1700. Output depending on configuration (kVA): DF 3/4 7,5; DF 7/8 15. Holder positions: DF 3/4 3/4; DF 7/8 7/8. Maximum workpiece diameter (mm): DF 3/4 250/210; DF 7/8 250. Adapter positions with 3/4/6 head driven holder: DF 3/4 DF 3: 9/12/18; DF 4: 12/16/24; DF 7/8 DF 7: 21/28/42; DF 8: 24/32/48.

Matching printed values: Maximum immersion depth (mm) 250, Voltage (V) 400, Maximum workpiece diameter with 3/4/6 head driven holder (mm) 90/85/55, Maximum workpiece weight with 3/4/6 head driven holder (kg) 2,0/1,5/0,5. Matching entries are not approval of equivalence.

Printed source field	DF 3/4	DF 7/8
Machine dimensions (w x d x h mm)	1415 x 1050 x 2500	1740 x 1360 x 2680
Working capacity of drum (liters)	80	200
Maximum immersion depth (mm)	250	250
Weight (kg)	~ 900	1700
Voltage (V)	400	400
Output depending on configuration (kVA)	7,5	15
Holder positions	3/4	7/8
Maximum workpiece diameter (mm)	250/210	250
Adapter positions with 3/4/6 head driven holder	DF 3: 9/12/18; DF 4: 12/16/24	DF 7: 21/28/42; DF 8: 24/32/48
Maximum workpiece diameter with 3/4/6 head driven holder (mm)	90/85/55	90/85/55
Maximum workpiece weight with 3/4/6 head driven holder (kg)	2,0/1,5/0,5	2,0/1,5/0,5

Review dimensions and the site supply separately

For DF 3/4 and DF 7/8, retain the source width, depth and height in that order. DF 3/4 lists 1415 x 1050 x 2500 mm and ~ 900 kg; DF 7/8 lists 1740 x 1360 x 2680 mm and 1700 kg. These entries do not include confirmed door access, maintenance clearance, floor loading or transport dimensions. Identify the actual offered configuration before planning installation.

DF 3/4 lists 400 V and 7,5 kVA; DF 7/8 lists 400 V and 15 kVA. The output row explicitly depends on configuration. Preserve comma decimals; do not convert apparent power into real power or annual consumption without the missing electrical information. Voltage alone does not establish supply phase, frequency, protection or site compatibility.

OTEC DF 3/4 vs DF 7/8 drag finishing catalog comparison - dimensions-and-supply-basis diagram - Jintaijin — Original diagram for this pair; independent OTEC table, printed page10. No actual part trial or fit approval.

Resolve the holder configuration before a part trial

DF 3/4 lists holder positions 3/4, diameter 250/210 mm and driven-holder adapters DF 3: 9/12/18; DF 4: 12/16/24. DF 7/8 lists 7/8, 250 mm and DF 7: 21/28/42; DF 8: 24/32/48. The adapter sequences follow the printed 3/4/6-head order. Retain the named models inside grouped columns instead of selecting one number as the installed configuration.

DF 3/4 driven-holder diameter: 90/85/55 mm; weight: 2,0/1,5/0,5 kg. DF 7/8: 90/85/55 mm and 2,0/1,5/0,5 kg. A dash means the table does not list a value. Do not treat it as zero, confirmed absence of the option or unrestricted load. Ask the responsible supplier to review the actual holder, part spacing, clamping, immersion and combined motion.

Record the workpiece drawing revision, features that must remain unchanged, holder interface and expected spacing. Review the whole fixture envelope and motion with the responsible supplier. Establish a trial inspection method for edges, dimensions, surface finish and cleanliness. User records are questions and observations; they are not reviewed configuration data.

OTEC DF 3/4 vs DF 7/8 drag finishing catalog comparison - holder-configuration-review diagram - Jintaijin — Original diagram for this pair; independent OTEC table, printed page10. No actual part trial or fit approval.

Source and version boundary

Official OTEC DF brochure, physical PDF page5, printed page10. Captured2026-10-04; creation metadata2019-08-21; printed revision not established. These independent reference models do not establish Jintaijin supply, partnership, current availability or an equivalent machine. No process recipe, qualification, measured trial or medical/pharmaceutical acceptance is inferred.

Questions about this pair

What differs between DF 3/4 and DF 7/8?

Can drum capacity predict the workpiece batch size?

No. DF 3/4 lists 80 liters and DF 7/8 lists 200 liters of drum working capacity. No part load, cycle time or hourly output is derived. Review holders, clearance, media, immersion and a representative part trial.

Does the output row give kW?

Do the holder rows approve my workpiece?

How current is this catalog reference?

The official brochure was captured on2026-10-04 and its PDF creation metadata is2019-08-21. No printed revision was established. A currently linked brochure does not prove that its table describes the current offer. Confirm the quotation and exact configuration with the responsible supplier.

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