2026 Panduan Pembeli Pemosisian Robot: Semua 5 Jenis yang Dibandingkan — Head-and-Tailstock, Tipe-L, Tipe-U, dan Lainnya

The Wrong Robot Positioner Costs More Than No Robot Positioner

A production manager at an engineering machinery plant once told me they chose a head-and-tailstock Robot Positioner on their first purchase purely because it was the lowest-priced option. Three months later, 90% of their workpieces turned out to be irregular multi-face structures the head-and-tailstock could not handle. The unit sat idle while workers still repositioned everything by hand. Returning it, re-purchasing, and reprogramming added 65% on top of the original budget.

There is no universally superior Robot Positioner — only the right one for your workpiece. This article compares all five mainstream types by structure, specifications, and real application fit, so you can make the right decision before you buy.

How to use this article: This is the core reference page for Robot Positioner selection. If you already know your workpiece type, jump directly to that section. For a fast overview, start with the summary table below.

Semua 5 Types at a Glance

Before examining each type in depth, use this table to orient yourself:

Jenis	sumbu	Workpiece Fit	Rentang Muatan	Typical Accuracy	Relative Cost
Kepala-dan-Tailstock (Seri B)	1	Panjang, berbentuk tabung, axially symmetric	500–5.000kg	0.05 mm	Mid
Tabel Rotasi Tipe H (Seri H)	1	Cakram, cincin, planar	300–2.000kg	±0,05mm	Rendah
Sumbu Ganda Tipe L (Seri L)	2	Mid-size multi-face; las + perakitan	300–1.500kg	±0,05mm	Mid
Sumbu Ganda Tipe U (Seri U)	2	Small to mid-size multi-face	300–1.000kg	±0,05mm	Mid
Tiga Sumbu (B008–B012)	3	Kompleks, berat, multi-wajah	300–2.000kg	±0.03 mm+	Tinggi

Jenis 1: Pengatur Posisi Robot Kepala dan Ekor (Seri B)

What workpieces does it suit?

Cangkang bejana tekan, bagian menara turbin angin, poros penggerak besar, engineering machinery boom bodies, manifold pipa. The defining characteristic: the workpiece is elongated or axially symmetric, and both ends can be gripped concentrically.

Bagaimana cara kerjanya

A servo-driven head grips one end; a passive tailstock supports the other. The workpiece rotates continuously along its primary axis while the welding robot tracks along the length. Circumferential seams are welded entirely in the flat position, pushing arc-on time to 85% atau lebih tinggi.

Actual model specifications

Model	Nilai Muatan	Akurasi Posisi	Max Flip Speed	Rentang Standar
MRK-B001 (Lampu)	500–1.000kg	0.05 mm@R350	90°/dtk	2 / 2.5 / 3 / 3.5 M
MRK-B002 (High-Load)	1,000–1.500kg	0.05 mm@R350	60°/dtk	2 / 2.5 / 3 / 3.5 M
MRK-B004 (Heavy-Duty)	1,500–5.000kg	±0,075mm@R500	30°/dtk	3 / 5 / 6 / 8 M

Strengths and limitations

• Strengths: Highest payload ceiling of all five types (B004: 5,000 kg); maximum arc-on time on circumferential seams; simplest mechanical design and lowest maintenance cost
• Limitations: Only suitable for axially symmetric or elongated workpieces; cannot handle multi-face irregular parts; both ends of the workpiece must be concentric and grippable

Jenis 2: Tabel Rotasi Servo Tipe H (Seri H)

What workpieces does it suit?

Flensa, bingkai struktural melingkar, EV battery pack trays, tutup ujung melingkar, bagian cincin. The defining characteristic: disc-shaped, berbentuk cincin, or planar geometry with a low height-to-diameter ratio.

Bagaimana cara kerjanya

A circular table rotates around a vertical axis. The workpiece is fixed to the table and rotates to each target angle while the welding robot completes seams sequentially. Simplest structure of all five types, lowest integration cost, easiest to commission.

Actual model specifications

Model	Nilai Muatan	Akurasi Posisi	Max Speed	Standard Table Dia. / Max Swing Dia.
MRK-H001	500–2.000kg	±0,05@R350	60°/dtk	600–2.000mm / multiple options
MRK-H004 (Standar)	500–1.500kg	±0,05mm@R350	60°/dtk	1,500 mm / 2,000 mm
MRK-H005 (Berat)	1,500–2.000kg	±0,05mm@R350	45°/dtk	2,500 mm / 3,000 mm

Strengths and limitations

• Strengths: Lowest cost and simplest integration of all five types; large table surface for flexible workpiece fixturing; wide table diameter range (600 mm sampai 2,500 mm)
• Limitations: Horizontal rotation only — side-face and bottom-face weld seams are inaccessible; stability degrades when workpiece height-to-diameter ratio exceeds 0.8

Jenis 3: Pemosisian Robot Sumbu Ganda Tipe L (Seri L)

What workpieces does it suit?

Bingkai paket baterai EV, motorcycle and bicycle frames, aluminum structural weldments, mid-size workpieces that require welding and assembly operations at the same station. The defining characteristic: multi-face welding combined with an assembly step at the same fixture.

Bagaimana cara kerjanya

An L-shaped frame combines two independent servo axes: sumbu perkakas (horizontal rotation) to orient the workpiece, and a flip axis to adjust tilt. Two-axis coordination covers 4 ke 6 weld faces in a single setup. The tooling axis also doubles as an assembly indexing reference, enabling welding and parts assembly at the same station without any workpiece transfer.

Actual model specifications

Model	Nilai Muatan	Tooling Axis Accuracy	Flip Axis Accuracy	Tooling Axis Speed
MRK-L001 (Light Dual-Axis)	300–500kg	±0,05mm@R350	±0,075mm@R500	60°/dtk, accel 45°/s²
MRK-L002 (Heavy Dual-Axis)	1,500 kg	Rotation torque: 3,960 N·m	Flip torque: 6,720 N·m	Rotasi 4 rpm / Membalik 3 rpm

Strengths and limitations

• Strengths: The only type that natively supports combined welding and assembly at one station; L002 heavy-duty torque handles 1,500 kg rangka alumunium; dual-axis covers multiple faces in a single setup
• Limitations: For pure welding applications without assembly requirements, a U-type typically offers better cost efficiency; flip range is limited — applications requiring >90° flip are not well suited

Jenis 4: Pemosisian Robot Sumbu Ganda Tipe U (Seri U)

What workpieces does it suit?

Braket struktural otomotif, bingkai panel instrumen, body-in-white weldments, standard robotic welding cell components. The defining characteristic: multi-face geometry, 300 ke 1,000 kg, high-volume production with strict consistency requirements.

Bagaimana cara kerjanya

A U-shaped frame houses a J1 flip axis (±90°) dan sumbu rotasi J2 (±200°) in coordinated servo motion. Any face of the workpiece can be brought to the flat-welding position without removing the part from the fixture. Jejak kompak (~1,2 m²) and fast axis response make this the dominant choice for automotive parts batch welding.

Actual model specifications

Model	Nilai Muatan	Pengulangan	J1 Flip Speed	J2 Rotation Speed
MRK-U001 (Lampu)	300 kg	±0,05mm@R250	30°/dtk, torque 2,695 N·m	60°/dtk, torque 1,225 N·m
MRK-U002 (Standar)	500–1.000kg	Membalik: ±0.075 mm@R500 Tool: ±0,05mm@R350	45°/dtk	60°/dtk, accel 45°/s²

Strengths and limitations

• Strengths: Completely eliminates overhead and vertical welding; U001 achieves ±0.05 mm@R250 for automotive precision requirements; smallest footprint of all dual-axis types — multiple units can be deployed side by side
• Limitations: Payload ceiling of 1,000 kg (U002) rules it out for heavy workpieces; J1 flip range of ±90° is insufficient for rare applications requiring greater tilt

Jenis 5: Pemosisian Robot Tiga Sumbu (Seri B008–B012)

What workpieces does it suit?

Lengan boom dan gayung excavator, crane jib sections, rangka nacelle turbin angin, struktur utama peralatan pertambangan. The defining characteristic: weld seams distributed across 6 or more planes, complex geometry, 500 kg and above.

Bagaimana cara kerjanya

Three coordinated servo axes — a large-swing rotation axis, sumbu perkakas, and a flip control — bring any weld seam on any face to flat-welding position in sequence, eliminating crane repositioning mid-cycle. B008 reaches a maximum swing diameter of 5,000 mm; high-accuracy models B009 and B011 achieve ±0.03 mm repeatability.

Actual model specifications

Model	Nilai Muatan	Rotation Accuracy	Max Swing Dia.	Tooling Accuracy	Tooling Speed
MRK-B008 (Berat)	1,500–2.000kg	±0.05 mm@R500	5,000 mm	±0,05mm@R350	60°/dtk
MRK-B009 (Modular)	500–1.000kg	±0,03mm@R500	4,000 mm	±0,05mm@R350	90°/dtk
MRK-B010 (Lampu)	300–500kg	±0,075mm@R500	4,000 mm	±0,075mm@R500	60°/dtk
MRK-B011 (Standar)	1,000–1.500kg	±0,03mm@R500	4,000 mm	±0,05mm@R350	90°/dtk
MRK-B012 (Vertical Flip)	300–1.500kg	±0,075mm@R500	—	±0,05@R350	60°/dtk

Strengths and limitations

• Strengths: Broadest workpiece adaptability of all five types; highest precision available at ±0.03 mm; eliminates all crane repositioning mid-cycle
• Limitations: Highest purchase cost and most complex integration; payload ceiling of 2,000 kg — workpieces above this require a heavy-duty head-and-tailstock (B004: 5,000 kg)

Side-by-Side Comparison: Semua 5 Types

Dimensi	Kepala-dan-Tailstock (B)	Tipe-H (H)	Tipe-L (L)	Tipe-U (kamu)	Tiga Sumbu (B008–B012)
Workpiece adaptability	❌ Hanya simetris aksial	❌ Disc / planar only	✅ Moderate	✅ Broad	✅ Widest
Muatan maksimum	✅ 5,000 kg	✅ 2,000 kg	⚪ 1,500 kg	❌ 1,000 kg	⚪ 2,000 kg
Menghilangkan pengelasan di atas kepala	⚪ Jahitan melingkar saja	❌ Top face only	✅ Multi-wajah efektif	✅ All faces eliminated	✅ All faces eliminated
Assembly function support	❌ No	❌ No	✅ Sumbu perkakas berfungsi ganda	❌ No	❌ No
Floor space required	❌ Besar (rentang 2–8 m)	✅ Small	⚪ Sedang	✅ Terkecil	⚪ Sedang
Kompleksitas integrasi	✅ Rendah	✅ Terendah	⚪ Sedang	⚪ Sedang	❌ High
Purchase cost	⚪ Pertengahan	✅ Terendah	⚪ Pertengahan	⚪ Pertengahan	❌ Tertinggi

⚪ = Middle range / between the two extremes

4-Step Selection Process

Melangkah 1: Identify your workpiece geometry

• Elongated or tubular workpiece, both ends grippable → Head-and-Tailstock
• Cakram, cincin, or planar geometry → H-Type Rotation Table
• Multi-wajah, 300–1.000kg, pure welding → U-Type
• Multi-face with welding + assembly at same station → L-Type
• Weld seams on 6+ pesawat, complex geometry → Three-Axis

Melangkah 2: Verify your load — workpiece + perlengkapan, dengan 20% batas

Beban seleksi = (workpiece weight + fixture weight) × 1.2. Using only the workpiece net weight is the single most common selection error. Fixtures routinely add 15–30% to the total load — ignoring them causes chronic overloading and premature drivetrain failure.

Melangkah 3: Match the accuracy requirement

• General structural welding: ±0.05 mm is fully sufficient
• Automotive precision components: ±0,05mm (U001) or ±0.03 mm (B009/B011)
• Heavy structural fabrication with coarse tolerances: ±0.075 mm is acceptable (B004, B010)

Melangkah 4: Choose your control integration mode

• Coordinated axis control (recommended): The Robot Positioner operates as an external axis of the welding robot. Rotation and welding occur simultaneously in real-time synchronization — arc-on time is maximized
• Independent control: Welding and rotation alternate. Lower integration cost, but arc-on time cannot be fully optimized — appropriate for simple processes or tight budgets

3 Most Common Selection Mistakes

Kesalahan 1: Buying the largest payload rating for safety margin. → Oversized payload means greater rotational inertia, slower response, and unnecessary cost. Select based on actual load × 1.2, not the largest available model.

Kesalahan 2: Assuming more axes is always better. → A three-axis unit costs 2–3× a single-axis unit and requires significantly longer commissioning. If your workpieces have only circumferential seams, a single-axis head-and-tailstock is the optimal solution.

Kesalahan 3: Planning to start cheap and upgrade later. → Different Robot Positioner types have incompatible fixture mounting patterns and control architectures. Upgrading means redesigning fixtures and reprogramming from scratch. Getting it right the first time is almost always less expensive than switching.

Get a Free Selection Assessment

If your workpiece situation is complex or you are still uncertain about the right configuration, our engineering team provides free application assessments — specific model recommendation, span or table size, and a preliminary ROI estimate — delivered in writing within 24 jam kerja.

► Contact us for a free Robot Positioner selection assessment

Tentang Penulis

Pengalaman & Kredensial Spesialis integrasi sistem pengelasan robot dengan 12+ pengalaman proyek langsung selama bertahun-tahun yang berfokus pada pemilihan dan integrasi Robot Positioner. Telah memberikan konsultasi kepada 300+ pabrik di seluruh Amerika Utara, Eropa, dan Asia. Semua data spesifikasi dalam artikel ini diambil dari H / B / L / Lembar data produk seri U. Latar belakang perusahaan: 26+ tahun teknik otomasi pengelasan, 40+ paten aktif, 1,500+ menyelesaikan proyek secara global, sekitar 70% melibatkan integrasi Robot Positioner. EU CE Certification: Robot Positioner systems (Nomor Sertifikat.: M.2026.206.C134866) Terakhir diperbarui: Mungkin 2026