Distributor hidraulik untuk ekskavator midi Kobelco SK200-3 SK200-4
Jika Anda memutuskan untuk membeli peralatan dengan harga yang rendah, pastikan Anda berkomunikasi dengan penjual yang sebenarnya. Cari tahu informasi sebanyaknya tentang pemilik peralatan. Salah satu cara untuk mengetahuinya adalah dengan merepresentasikan diri Anda sendiri sebagai perusahaan. Jika ada yang mencurigakan, beri tahu kami untuk dikontrol lebih lanjut melalui formulir masukan.
Sebelum memutuskan untuk membeli, pelajari secara saksama beberapa penawaran untuk mengetahui biaya rata-rata dari peralatan yang dipilih. Jika harga penawaran yang Anda pilih jauh lebih rendah daripada penawaran yang serupa, pikirkan kembali. Perbedaan harga yang signifikan mungkin menunjukkan ada sesuatu yang disembunyikan atau penjual mencoba berbuat curang.
Jangan membeli produk yang harganya berbeda jauh dari harga rata-rata untuk peralatan serupa.
Jangan menyetujui jaminan yang meragukan dan barang harus dibayarkan di muka. Jika ragu, jangan takut untuk mencari tahu secara mendetail, minta foto dan dokumen tambahan untuk peralatan, periksa keabsahan dokumen, ajukan pertanyaan.
Jenis penipuan yang paling umum. Penjual yang tidak jujur mungkin meminta sejumlah uang untuk pembayaran di muka sebagai “booking” atas pembelian peralatan oleh Anda. Setelah mengumpulkan banyak uang, ia menghilang dan tidak bisa lagi dihubungi.
- Mentransfer pembayaran di muka ke kartu
- Jangan melakukan pembayaran di muka tanpa dokumen yang menyatakan proses transfer uang, jika selama komunikasi penjual tampak meragukan.
- Mentransfer ke akun "Tepercaya"
- Permintaan seperti ini seharusnya sebagai indikasi, kemungkinan besar Anda sedang berkomunikasi dengan penipu.
- Mentransfer ke akun perusahaan dengan nama yang sama
- Berhati-hatilah, penipu mungkin akan berpura-pura sebagai perusahaan terkenal dengan membuat perubahan kecil pada nama. Jangan mentransfer uang jika nama perusahaan meragukan.
- Penggantian detail pada faktur dari perusahaan sebenarnya
- Sebelum melakukan transfer, pastikan detail yang disebutkan benar, dan apakah terkait dengan perusahaan tersebut.
Kontak penjual
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Product Overview
Between the hydraulic pump and every working cylinder sits a decision‑maker: the main control valve. On the Kobelco SK200‑3 and SK200‑4, this distribution valve assembly decides where the pump's flow goes — boom, arm, bucket, swing or tracks — and in what priority. It is the reason the machine can dig, swing and track at the same time without the circuits robbing each other. When it wears, the machine loses its composure: the boom sags while holding a load, the arm creeps when parked, and the swing becomes grabby or overshoots its mark.
On a ‑3 or ‑4 series Kobelco that has worked through years of subdivisions and pipelines, the valve's internal spools and bores wear unevenly, letting oil bleed across the lands. The operator notices the small things first — a bucket that settles overnight, a boom that drifts during a lunch break, tracks that twitch when an attachment is cycled. Rebuilding a worn distributor in place is fiddly work with dozens of springs and O‑rings. This aftermarket assembly replaces the whole block with fresh spools, springs and seals, pre‑set to Kobelco pressures, so the old valve comes off and the new one bolts on with the same hoses.
Core Advantages
1. Fresh spools stop the overnight settle
A bucket that sinks while the machine is parked is oil leaking past worn spool lands. New spool‑and‑bore pairs restore the tight seal that holds pressure where the operator left it.
2. Smooth swing without the overshoot
Scored bores make swing control sloppy — the cab over‑rotates, then hunts back. Lapped spools meter the swing circuit cleanly, bringing back the precise, controllable rotation the machine had when new.
3. Priority restored between tracks and working circuits
The distribution assembly sets flow priority between travel and attachments. New internals put that order back to Kobelco's design, so the tracks no longer lurch when the bucket is cycled.
4. A complete block instead of a bench rebuild
Replacing the whole valve avoids the delicate job of re‑spooling an old block with dozens of small parts. One clean exchange, same hose positions, and the machine is back to work.
5. Aftermarket value for a ‑series Kobelco fleet
A dealer exchange distributor carries a premium that is hard to justify on older Kobelco machines. This aftermarket assembly restores hydraulic manners at a practical price, with sample and bulk supply.
Manufacturing & Quality Control
Spool and bore pairs are finished to close clearance and run‑in on the bench to confirm free movement without stick‑slip. Each completed valve is flow‑tested across its circuits, with relief and compensator settings logged before acceptance; anything off spec is stripped and reworked. The finished block is oil‑fogged, port‑plugged and shipped on shock‑absorbing dunnage.
Frequently Asked Questions
Q1: Does this valve fit both the SK200‑3 and SK200‑4?
A: The distribution assembly is shared across these two builds, but port fittings can differ by year. Send the machine serial number and we confirm the correct variant before dispatch.
Q2: What is the most common reason a control valve fails?
A: Contaminated hydraulic oil. Worn pumps shed swarf that scores spool bores, and the valve slowly loses its ability to hold pressure. That is also why a new valve should go in with a full oil and filter change.
Q3: How long does the exchange take?
A: A competent mechanic can swap the block in a working day once the cab floor or side cover is opened up. Bleeding and a pressure check follow before the machine returns to digging.
Q4: Do I need to flush the hydraulic system?
A: Yes. If the old valve is worn, flush the circuit, change the return filter and suction strainer, and fill with fresh Kobelco‑spec oil. Clean oil protects the new valve's spools.
Q5: Is this interchangeable with the SK200‑5 or ‑6 valve?
A: No — the ‑5 and ‑6 generations use a different distributor with updated porting and pressures. The generations are not interchangeable without major plumbing changes.
Q6: What is the warranty position?
A: Materials and build defects are covered. Damage from contaminated oil, water ingress, a seized spool forced into movement or incorrect pressure adjustment is excluded. Photograph any arrival damage before uncrating.